**THIS IS ONLY A COLLECTION OF THE MOST CURRENT LAWS THAT WE COULD FIND AND IS IN NO WAY INTENDED TO BE COMPLETE OR UP TO DATE AND SHOULD NOT BE USED AS A LEGAL REFERENCE IN ANY WAY**

Alabama

Alabama Code - Section 32-5-213 : Horns and warning devices - It shall be unlawful for any vehicle to be equipped with or for any person to use upon a vehicle any siren or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Alaska

Alaska Admin Code 04.210 - No vehicle may be equipped with, nor may a person use, a siren, whistle, or bell, except as otherwise permitted in this section. A vehicle may be equipped with a theft alarm signal device, which is installed so that it cannot be used by the driver as an ordinary warning signal. A theft alarm signal device may use a whistle, bell, horn or other audible signal, but may not use a siren.

Arizona

Law 28-954. Horns and Warning Devices - A motor vehicle when operated on a highway shall be equipped with a horn that is in good working order and that is capable of emitting sound audible under normal conditions from a distance of at least two hundred feet. Any horn or other warning device shall not emit an unreasonably loud or harsh sound or a whistle. If reasonably necessary to ensure the safe operation of a motor vehicle, the driver shall give an audible warning with the driver's horn but shall not otherwise use the horn when on a highway. A vehicle shall not be equipped with and a person shall not use on a vehicle a siren, whistle or bell, except as otherwise permitted in this section. A vehicle may but is not required to be equipped with a theft alarm signal device that is arranged so that it cannot be used by the driver as an ordinary warning signal.

Arkansas

27-37-202. Horns and warning devices - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200'). No horn or other warning devices shall emit an unreasonably loud or harsh sound or a whistle.When reasonably necessary to ensure safe operation, the driver of a motor vehicle shall give audible warning with his or her horn but shall not otherwise use the horn when upon a public street or highway.

California

Vehicle Code section 27000(a): A motor vehicle shall be equipped with a horn in good working order and able to emit sound audible under normal conditions from a distance of not less than 200 feet, however, the horn shall not emit an unreasonably loud or harsh sound.

Colorado

Statute 42-4-224. Horns or warning devices - Every motor vehicle when operated upon a highway, shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound, except as provided in section 42-4-213 (1) in the case of authorized emergency vehicles or as provided in section 42-4-222. The driver of a motor vehicle, when reasonably necessary to ensure safe operation, shall give audible warning with the horn but shall not otherwise use such horn when upon a highway.

Connecticut

Dont have any specific laws for horns, but their noise ordinance law Sections 14-80a-1a through 14-80a-10a do not apply to the sound generated by a warning device, such as a horn or siren installed in a motor vehicle, unless such a device is intentionally sounded in order to preclude an otherwise valid noise emission measurement.

Delaware

4306 Horns and other sound devices; unlawful use. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. Except as otherwise provided, no vehicle shall be equipped with and no person shall use upon a vehicle any siren, exhaust, compression or spark plug whistle. The driver of a vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the horn but shall not otherwise use the horn for any other purpose. No driver of any vehicle shall use a horn: To make unreasonably loud or harsh sound; when stationary; or when passing an animal-drawn vehicle or bicycle under normal conditions where no imminent danger of a collision exists.

Florida

Florida Statutes 316.271 – Horns and warning devices - No horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. No vehicle shall be equipped with, nor shall any person use upon a vehicle, any siren, whistle, or bell, except as otherwise permitted in this section.

Georgia

Georgia code 40-8-70. Horns and warning devices - (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when it is reasonably necessary to ensure safe operation, give audible warning with his or her horn but shall not otherwise use such horn when upon a highway. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell except as otherwise permitted in this Code section and Code Section 40-8-94. No vehicle shall be equipped with a theft alarm signal device which is so arranged that it can be used by the driver as an ordinary warning signal.

Hawaii

Sec. 15-19.27 Horns and warning devices.(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his or her horn; but shall not otherwise use such horn when upon a highway.

Idaho

Sec. 15-19.27 Horns and warning devices.(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his or her horn; but shall not otherwise use such horn when upon a highway.

Illinois

625 ILCS 5/12-601 Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonable loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway.”

Indiana

Indiana Code 9-19-5-2. Use of horn during operation of vehicle- Sec. 2. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn on the motor vehicle but may not otherwise use the horn when upon a highway. Sec. 3. (a) Except as provided in subsection (b): a vehicle may not be equipped with; and a person may not use upon a vehicle; a siren, whistle, or bell. An authorized emergency vehicle may be equipped with a siren, whistle, or bell that is capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the department. A siren authorized under this section may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violation of the law. The person who drives a vehicle equipped with a siren under this section shall sound the siren when reasonably necessary to warn pedestrians and other persons who are driving vehicles of the approach of the authorized vehicle.

Iowa

2016 Iowa Code Section 321.432 - Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with the horn but shall not otherwise use such horn when upon a highway.

Kansas

2015 Kansas Statutes 8-1738. Horns and warning devices. (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or whistle. The driver of a motor vehicle when reasonably necessary to insure safe operation shall give audible warning with his horn but shall not otherwise use such horn when upon a highway.

Kentucky

Motor Vehicles Traffic Regulation 189.080 Horns and other sound devices. Every motor vehicle, when in use on a highway, shall be equipped with a horn or other device capable of making an abrupt sound sufficiently loud to be heard from a distance of at least two hundred (200) feet under all ordinary traffic conditions. Every person operating an automobile or bicycle shall sound the horn or sound device whenever necessary as a warning of the approach of such vehicle to pedestrians or other vehicles, but shall not sound the horn or sound device unnecessarily. A bell may be used on a bicycle.

Louisiana

RS 32:351 — Horns and warning devices - A.(1) Every motor vehicle when operated upon a highway of this state shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his horn, but shall not otherwise use such horn when upon a highway of this state. (2) Persons with mobility impairments, while operating a motor vehicle upon any state or local highway of this state, may utilize the horn of such vehicle if the nature of the operator's physical impairment requires use of the horn in a situation other than one required to ensure safe operation of the motor vehicle and the operator is operating a motor vehicle with a mobility-impaired license plate or the operator has been issued a mobility-impaired hang tag.

Maine

Title 29A 1903. ADEQUATE SIGNALING DEVICE; USE 1. Signaling device required. A person may not operate a motor vehicle without a suitable and adequate horn or other device for signaling.2. Unnecessarily sounded. A person may not unnecessarily sound a signaling device or horn.

Maryland

2010 Maryland Code Section 22-401 - Horns and warning devices (a) Adequacy of horns.- Every motor vehicle when operated on a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. (b) When to be used.- The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn, but may not otherwise use the horn when on a highway. (c) Sirens, whistles, and bells prohibited.- No vehicle may be equipped with nor may any person use on a vehicle any siren, whistle, or bell, except as otherwise permitted in this section.

Massachusetts

Section 16. No person shall operate a motor vehicle, nor shall any owner of such vehicle permit it to be operated, in or over any way, public or private, whether laid out under authority of law or otherwise, which motor vehicles are prohibited from using, provided notice of such prohibition is conspicuously posted at the entrance to such way. No person shall operate a motor vehicle, nor shall any owner of such vehicle permit it to be operated upon any way, except fire department and fire patrol apparatus, unless such motor vehicle is equipped with a muffler to prevent excessive or unnecessary noise, which muffler is in good working order and in constant operation, and complies with such minimum standards for construction and performance as the registrar may prescribe. No person shall use a muffler cut-out or by-pass. No person shall operate a motor vehicle on any way which motor vehicle is equipped (1) with a muffler from which the baffle plates, screens or other original internal parts have been removed and not replaced; or (2) with an exhaust system which has been modified in a manner which will amplify or increase the noise emitted by the exhaust. No person operating a motor vehicle shall sound a bell, horn or other device, nor in any manner operate such motor vehicle so as to make a harsh, objectionable or unreasonable noise, nor permit to escape from such vehicle smoke or pollutants in such amounts or at such levels as may violate motor vehicle air pollution control regulations adopted under the provisions of chapter one hundred and eleven. No siren shall be mounted upon any motor vehicle except fire apparatus, ambulances, vehicles used in official line of duty by any member of the police or fire fighting forces of the commonwealth or any agency or political subdivision thereof, and vehicles owned by call fire fighters or by persons with police powers and operated in official line of duty, unless authorized by the registrar. No person shall use on or in connection with any motor vehicle a spot light, so called, the rays from which shine more than two feet above the road at a distance of thirty feet from the vehicle, except that such a spot light may be used for the purpose of reading signs, and as an auxiliary light in cases of necessity when the other lights required by law fail to operate.

Michigan

MICHIGAN VEHICLE CODE 257.706 Horn or other warning device; siren, whistle, air horn, or bell; theft alarm signal device. (a) A motor vehicle, including a motorcycle or moped, when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet but a horn or other warning device shall not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use the horn when upon a highway. A vehicle shall not be equipped with nor shall a person use upon a vehicle a siren, whistle, or bell, except as otherwise permitted in this section. A commercial vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal.(d) An authorized emergency vehicle may be equipped with a siren, whistle, air horn, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law. In those cases the driver of the vehicle shall sound the siren when necessary to warn pedestrians and other drivers of the approach of the vehicle. (e) A motor vehicle licensed as an historic vehicle may be equipped with a siren, whistle, or bell which may be used when participating in a parade, exhibition, tour, or similar event.

Minnesota

2018 Minnesota Statutes 169.68 HORN, SIREN - (a) Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. However, the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. (b) A vehicle must not be equipped with, and a person shall not use upon a vehicle, any siren, whistle, or bell, except as otherwise permitted in this section. It is permissible, but not required, for any commercial vehicle to be equipped with a theft alarm signal device, so arranged that it cannot be used by the driver as an ordinary warning signal. All authorized emergency vehicles must be equipped with a siren capable of emitting sound audible under normal conditions from a distance of not less than 500 feet and of a type conforming to the federal certification standards for sirens, as determined by the General Services Administration. However, the siren must not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of the vehicle shall sound the siren when necessary to warn pedestrians and other drivers of the vehicle's approach.

Mississippi

2013 Mississippi Code 63-7-65 - Horns and other warning devices (1) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn upon a highway. No horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle.Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the department. No such siren shall be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound such siren when necessary to warn pedestrians and other drivers of the approach thereof.(3) No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. No bicycle shall be equipped with nor shall any person use upon a bicycle any siren or whistle.(4) Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal.

Missouri

Missouri Law 307.170.  Other equipment of motor vehicles — violations, penalty. — 1. Signaling devices: Every motor vehicle shall be equipped with a horn, directed forward, or whistle in good working order, capable of emitting a sound adequate in quantity and volume to give warning of the approach of such vehicle to other users of the highway and to pedestrians. Such signaling device shall be used for warning purposes only and shall not be used for making any unnecessary noise, and no other sound-producing signaling device shall be used at any time.

Montana

Montana Code 61-9-401 - Horns, security alarms, and warning devices. (1) A motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. A horn or other warning device may not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to ensure safe operation give audible warning with the horn but may not otherwise use the horn when upon a highway. (2) A vehicle may not be equipped with and a person may not use upon a vehicle a siren, whistle, or bell, except as otherwise permitted in this section. (3) A vehicle may be equipped with a security alarm signal device that cannot be used by the driver as an ordinary warning signal while the vehicle is in motion. (4) An authorized emergency vehicle may be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet and of a type approved by the department. The siren may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which event the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the vehicle's approach.

Nebraska

2006 Nebraska Revised Statutes - § 60-6,285 — Horn; requirements; prohibited acts - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet. Except as otherwise provided in this section, it shall be unlawful for any vehicle to be equipped with or for any person to use upon a vehicle any siren, exhaust, compression, or spark plug whistle or for any person at any time to use a horn, otherwise than as a reasonable warning, or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Every police and fire department and fire patrol vehicle and every ambulance used for emergency calls shall be equipped with a bell, siren, or exhaust whistle.

Nevada

NRS 484D.400 - Horns and other warning devices - 1. Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. A person driving a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. A vehicle must not be equipped with, and a person shall not use upon a vehicle, a siren, whistle or bell, except as otherwise provided in this chapter. It is permissible, but not required, to equip a vehicle with a theft alarm which is arranged so that it cannot be used by the driver as an ordinary warning signal.

New Hampshire

1. Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. 2. A person driving a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. 3. A vehicle must not be equipped with, and a person shall not use upon a vehicle, a siren, whistle or bell, except as otherwise provided in this chapter. 4. It is permissible, but not required, to equip a vehicle with a theft alarm which is arranged so that it cannot be used by the driver as an ordinary warning signal.

New Jersey

2013 New Jersey Revised Statutes 39:3-69: Horns and audible warning devices - Every motor vehicle except a motor-drawn vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn when upon a highway.

New Mexico

2006 New Mexico Statutes - 66-3-843 — Horns and warning devices Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall be used which does not produce a harmonious sound. The driver of a motor vehicle shall when reasonably necessary to ensure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway.

New York

Article 9 Section 375(a) - Every motor vehicle, operated or driven upon the public highways of the state, shall be provided with adequate brakes and steering mechanism in good working order and sufficient to control such vehicle at all times when the same is in use, and a suitable and adequate horn or other device for signaling, which horn or device shall produce a sound sufficiently loud to serve as a danger warning but shall not be used other than as a reasonable warning nor be unnecessarily loud or harsh.

North Carolina

20-125. Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, and it shall be unlawful, except as otherwise provided in this section, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, compression or spark plug whistle or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonable loud or harsh sound by means of a horn or other warning device. All such horns and warning devices shall be maintained in good working order and shall conform to regulation not inconsistent with this section to be promulgated by the Commissioner

North Dakota

Century Code 39-21-36. Horn and warning device - While being operated upon a highway, every motor vehicle must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet [60.96 meters], but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. Whenever reasonably necessary for safe operation, the driver of a motor vehicle upon a highway shall give audible warning with the vehicle's horn, but may not otherwise use the vehicle's horn while upon a highway. 2. No vehicle may be equipped with nor may any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. 3. Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. 4. Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet [152.4 meters] and of a type approved by the department, but the siren may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which events the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of approaching vehicles.

Ohio

Ohio Code 4513.21 Horns, sirens, and warning devices - (A) Every motor vehicle or trackless trolley when operated upon a highway shall be equipped with a horn which is in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet. No motor vehicle or trackless trolley shall be equipped with, nor shall any person use upon a vehicle, any siren, whistle, or bell. Any vehicle may be equipped with a theft alarm signal device which shall be so arranged that it cannot be used as an ordinary warning signal. Every emergency vehicle shall be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type approved by the director of public safety. Such equipment shall not be used except when such vehicle is operated in response to an emergency call or is in the immediate pursuit of an actual or suspected violator of the law, in which case the driver of the emergency vehicle shall sound such equipment when it is necessary to warn pedestrians and other drivers of the approach thereof. (B) Whoever violates this section is guilty of a minor misdemeanor.

Oklahoma

2014 Oklahoma Statutes Title 47. Motor Vehicles §47-12-401 Horns and warning devices - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with a horn but shall not otherwise use such horn when upon a highway. B. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, except as otherwise permitted in subsection D of this section. C. Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. A theft alarm signal device shall not use a siren, as described in subsection D of this section. D. Every authorized emergency vehicle shall, in addition to any other equipment and distinctive markings required by this title, be equipped with a siren, or similar device, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the Department of Public Safety, but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound said siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof. E. It shall be unlawful for any person to use a device capable of producing auditory warning signals similar to that on an authorized emergency vehicle or to use audible signal equipment from a motor vehicle for the purpose of causing any other motor vehicle operator to yield right-of-way and stop, or which actually causes any other motor vehicle operator to yield the right-of-way and stop, whether intended or not. The provisions of this subsection shall not apply to the operators of authorized emergency vehicles.

Oregon

2017 ORS 815.225 Violation of use limits on sound equipment - A person commits the offense of violation of use limits on sound equipment if the person does any of the following: Uses upon a vehicle, any bell, siren, compression or exhaust whistle. Uses a horn otherwise than as a reasonable warning or makes any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Authorized emergency vehicles and ambulances are not subject to this section but are subject to ORS 820.370 (Ambulance or emergency vehicle sirens) and 820.380 (Illegal ambulance or emergency vehicle sirens). (3) The offense described in this section, violation of use limits on sound equipment, is a Class C traffic violation. [1983 c.338 §491]

Pennsylvania

2010 Pennsylvania CodeTitle 75 - 4535. Audible warning devices. (a) General rule.--Every motor vehicle operated on a highway shall be equipped with a horn or other audible warning device of a type approved in regulations of the department.(b) Certain sound devices prohibited.--Except as specifically provided in this part or by regulations of the department, no vehicle operated on a highway shall be equipped with a siren, bell, whistle or any device emitting a similar sound or any unreasonably loud or harsh sound. (c) Exceptions.--This section shall not apply to any special mobile equipment, commercial implement of husbandry or implement of husbandry that is not so equipped by the original manufacturer.

Rhode Island

2012 Rhode Island General Laws § 31-23-8 Horn required. – Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200'). However, no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his or her horn but shall not otherwise use the horn when upon a highway. Violations of this section are subject to fines enumerated in § 31-41.1-4.

South Carolina

2012 South Carolina Code of Laws Section 56-5-4960 - Use of horn - The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn when upon a highway.

South Dakota

South Dakota State Law 32-15-11.   Sirens, whistles, and unnecessary loud noises as misdemeanor. It is a Class 2 misdemeanor, except as otherwise provided in § 32-15-12, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, or any compression or spark plug whistle, or any exhaust horn, or whistle which does not produce a harmonious sound, or for any person at any time to use a horn otherwise than a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Tennesse

Tennessee Code 55-9-201. Horn — Bells, sirens or exhaust whistles on emergency vehicles - (a) Every motor vehicle, when operated upon any road, street or highway of the state, shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200¢), and it is unlawful, except as otherwise provided in this section, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, exhaust, compression or spark plug whistle or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Texas

Texas Transportation Code § 547.501. Audible Warning Devices - (a) A motor vehicle shall be equipped with a horn in good working condition that emits a sound audible under normal conditions at a distance of at least 200 feet. (b) A vehicle may not be equipped with and a person may not use on a vehicle a siren, whistle, or bell unless the vehicle is: (1) a commercial vehicle that is equipped with a theft alarm signal device arranged so that the device cannot be used as an ordinary warning signal;  or (2) an authorized emergency vehicle that is equipped with a siren, whistle, or bell that complies with Section 547.702 . (c) A motor vehicle operator shall use a horn to provide audible warning only when necessary to insure safe operation. (d) A warning device, including a horn, may not emit an unreasonably loud or harsh sound or a whistle.

Utah

Utah Code 41-6a-1625. Horns and warning devices -- Emergency vehicles.

(1) A motor vehicle operated on a highway shall be equipped with a horn or other warning device in good working order.The horn or other warning device: shall be capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; and may not emit an unreasonably loud or harsh sound or a whistle.The operator of a motor vehicle: when reasonably necessary to insure safe operation, shall give audible warning with the horn; and except as provided under Subsection (1)(c)(i), may not use the horn on a highway.

(2) Except as provided under this section, a vehicle may not be equipped with and a person may not use on a vehicle a siren, whistle, or bell.A vehicle may be equipped with a theft alarm signal device if it is arranged so that it cannot be used by the operator as an ordinary warning signal. A theft alarm signal device may: use a whistle, bell, horn or other audible signal; and not use a siren. An authorized emergency vehicle shall be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet. The type of sound shall be approved by the department based on standards adopted by rules under Section 41-6a-1601. The siren on an authorized emergency vehicle may not be used except: when the vehicle is operated in response to an emergency call; or in the immediate pursuit of an actual or suspected violator of the law. The operator of an authorized emergency vehicle shall sound the siren in accordance with this section when reasonably necessary to warn pedestrians and other vehicle operators of the approach of the authorized emergency vehicle. A violation of this section is an infraction.

Vermont

Vermont Statutes Title 23 Motor Vehicles Chapter 13 OPERATION OF VEHICLES § 1131 Warning signal - The operator of a motor vehicle, whenever reasonably necessary to ensure safe operation, shall give an audible warning with the horn of his or her vehicle but shall not otherwise use the horn when upon a highway.

Virginia

§ 46.2-1059. Horns. Every motor vehicle driven on a highway shall be equipped with a working horn capable of emitting sound audible under normal conditions for at least 200 feet. § 46.2-1060. Illegal sirens, whistles, etc.; unlawful use of warning devices; exceptions. It shall be unlawful for any vehicle to be equipped with or for any person to use on any vehicle any siren or exhaust, compression or spark plug whistle, or horn except as may be authorized in this title. It shall be unlawful for any vehicle operated on a public highway to be equipped with any warning device that is not of a type that has been approved by the Superintendent. It shall further be unlawful for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. However, vehicles of common carriers or extraordinarily large and heavy vehicles may be equipped with such type of warning device as the Superintendent may require or permit. Notwithstanding the provisions of this article, a siren, bell, or supplemental horn may be used on a vehicle as a noisemaker for an alarm system if the device is installed so as to prohibit actuation of the system by the driver while the vehicle is in motion.

Washington

RCW 46.37.380 Horns, warning devices, and theft alarms. (1) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his or her horn but shall not otherwise use such horn when upon a highway. (2) No vehicle may be equipped with nor may any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. (3) It is permissible for any vehicle to be equipped with a theft alarm signal device so long as it is so arranged that it cannot be used by the driver as an ordinary warning signal. Such a theft alarm signal device may use a whistle, bell, horn, or other audible signal but shall not use a siren. (4) Any authorized emergency vehicle may be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type conforming to rules adopted by the state patrol, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of its approach..

West Virginia

2012 West Virginia Code - 17C-15-33. Horns and warning devices - (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. It is permissible but not required that any commercial vehicle be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type approved by the department, but such siren shall not be used except when such vehicle is operated in response to an emergency or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound said siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof.

Wisconsin

2011 Wisconsin Code 347.38 Horns and warning devices - No person shall operate a motor vehicle upon a highway unless such motor vehicle is equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no person shall at any time use a horn otherwise than as a reasonable warning or make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Except as otherwise provided in this section, no vehicle shall be equipped with nor shall any person use upon a vehicle any siren or compression or exhaust whistle.Any vehicle may be equipped with a theft alarm signal device if such device is so arranged that it cannot be used by the driver as an ordinary warning signal.An authorized emergency vehicle shall be equipped with a siren, but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, when responding to but not upon returning from a fire alarm, when transporting an organ for human transplantation, or when transporting medical personnel for the purpose of performing human organ harvesting or transplantation immediately after the transportation, in which events the driver of such vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers.

Wyoming

2011 Wyoming Statutes Title 31-5-952. Horns and warning devices (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use the horn when upon a highway. (b) No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle or bell, except as otherwise permitted in this section.(c) Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. The theft alarm signal device may use a whistle, bell, horn or other audible signal but shall not use a siren. (d) Every authorized emergency vehicle, except wreckers, shall be equipped with a siren, whistle or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the superintendent, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which case the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof. (e) This section applies to motorcycles, motor-driven cycles, multipurpose vehicles and mopeds.

**THIS IS ONLY A COLLECTION OF THE MOST CURRENT LAWS THAT WE COULD FIND AND IS IN NO WAY INTENDED TO BE COMPLETE OR UP TO DATE AND SHOULD NOT BE USED AS A LEGAL REFERENCE IN ANY WAY**

Alabama

Alabama Code - Section 32-5-213 : Horns and warning devices - It shall be unlawful for any vehicle to be equipped with or for any person to use upon a vehicle any siren or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Alaska

Alaska Admin Code 04.210 - No vehicle may be equipped with, nor may a person use, a siren, whistle, or bell, except as otherwise permitted in this section. A vehicle may be equipped with a theft alarm signal device, which is installed so that it cannot be used by the driver as an ordinary warning signal. A theft alarm signal device may use a whistle, bell, horn or other audible signal, but may not use a siren.

Arizona

Law 28-954. Horns and Warning Devices - A motor vehicle when operated on a highway shall be equipped with a horn that is in good working order and that is capable of emitting sound audible under normal conditions from a distance of at least two hundred feet. Any horn or other warning device shall not emit an unreasonably loud or harsh sound or a whistle. If reasonably necessary to ensure the safe operation of a motor vehicle, the driver shall give an audible warning with the driver's horn but shall not otherwise use the horn when on a highway. A vehicle shall not be equipped with and a person shall not use on a vehicle a siren, whistle or bell, except as otherwise permitted in this section. A vehicle may but is not required to be equipped with a theft alarm signal device that is arranged so that it cannot be used by the driver as an ordinary warning signal.

Arkansas

27-37-202. Horns and warning devices - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200'). No horn or other warning devices shall emit an unreasonably loud or harsh sound or a whistle.When reasonably necessary to ensure safe operation, the driver of a motor vehicle shall give audible warning with his or her horn but shall not otherwise use the horn when upon a public street or highway.

California

Vehicle Code section 27000(a): A motor vehicle shall be equipped with a horn in good working order and able to emit sound audible under normal conditions from a distance of not less than 200 feet, however, the horn shall not emit an unreasonably loud or harsh sound.

Colorado

Statute 42-4-224. Horns or warning devices - Every motor vehicle when operated upon a highway, shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound, except as provided in section 42-4-213 (1) in the case of authorized emergency vehicles or as provided in section 42-4-222. The driver of a motor vehicle, when reasonably necessary to ensure safe operation, shall give audible warning with the horn but shall not otherwise use such horn when upon a highway.

Connecticut

Dont have any specific laws for horns, but their noise ordinance law Sections 14-80a-1a through 14-80a-10a do not apply to the sound generated by a warning device, such as a horn or siren installed in a motor vehicle, unless such a device is intentionally sounded in order to preclude an otherwise valid noise emission measurement.

Delaware

4306 Horns and other sound devices; unlawful use. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. Except as otherwise provided, no vehicle shall be equipped with and no person shall use upon a vehicle any siren, exhaust, compression or spark plug whistle. The driver of a vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the horn but shall not otherwise use the horn for any other purpose. No driver of any vehicle shall use a horn: To make unreasonably loud or harsh sound; when stationary; or when passing an animal-drawn vehicle or bicycle under normal conditions where no imminent danger of a collision exists.

Florida

Florida Statutes 316.271 – Horns and warning devices - No horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. No vehicle shall be equipped with, nor shall any person use upon a vehicle, any siren, whistle, or bell, except as otherwise permitted in this section.

Georgia

Georgia code 40-8-70. Horns and warning devices - (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when it is reasonably necessary to ensure safe operation, give audible warning with his or her horn but shall not otherwise use such horn when upon a highway. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell except as otherwise permitted in this Code section and Code Section 40-8-94. No vehicle shall be equipped with a theft alarm signal device which is so arranged that it can be used by the driver as an ordinary warning signal.

Hawaii

Sec. 15-19.27 Horns and warning devices.(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his or her horn; but shall not otherwise use such horn when upon a highway.

Idaho

Sec. 15-19.27 Horns and warning devices.(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his or her horn; but shall not otherwise use such horn when upon a highway.

Illinois

625 ILCS 5/12-601 Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonable loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway.”

Indiana

Indiana Code 9-19-5-2. Use of horn during operation of vehicle- Sec. 2. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn on the motor vehicle but may not otherwise use the horn when upon a highway. Sec. 3. (a) Except as provided in subsection (b): a vehicle may not be equipped with; and a person may not use upon a vehicle; a siren, whistle, or bell. An authorized emergency vehicle may be equipped with a siren, whistle, or bell that is capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the department. A siren authorized under this section may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violation of the law. The person who drives a vehicle equipped with a siren under this section shall sound the siren when reasonably necessary to warn pedestrians and other persons who are driving vehicles of the approach of the authorized vehicle.

Iowa

2016 Iowa Code Section 321.432 - Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with the horn but shall not otherwise use such horn when upon a highway.

Kansas

2015 Kansas Statutes 8-1738. Horns and warning devices. (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or whistle. The driver of a motor vehicle when reasonably necessary to insure safe operation shall give audible warning with his horn but shall not otherwise use such horn when upon a highway.

Kentucky

Motor Vehicles Traffic Regulation 189.080 Horns and other sound devices. Every motor vehicle, when in use on a highway, shall be equipped with a horn or other device capable of making an abrupt sound sufficiently loud to be heard from a distance of at least two hundred (200) feet under all ordinary traffic conditions. Every person operating an automobile or bicycle shall sound the horn or sound device whenever necessary as a warning of the approach of such vehicle to pedestrians or other vehicles, but shall not sound the horn or sound device unnecessarily. A bell may be used on a bicycle.

Louisiana

RS 32:351 — Horns and warning devices - A.(1) Every motor vehicle when operated upon a highway of this state shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his horn, but shall not otherwise use such horn when upon a highway of this state. (2) Persons with mobility impairments, while operating a motor vehicle upon any state or local highway of this state, may utilize the horn of such vehicle if the nature of the operator's physical impairment requires use of the horn in a situation other than one required to ensure safe operation of the motor vehicle and the operator is operating a motor vehicle with a mobility-impaired license plate or the operator has been issued a mobility-impaired hang tag.

Maine

Title 29A 1903. ADEQUATE SIGNALING DEVICE; USE 1. Signaling device required. A person may not operate a motor vehicle without a suitable and adequate horn or other device for signaling.2. Unnecessarily sounded. A person may not unnecessarily sound a signaling device or horn.

Maryland

2010 Maryland Code Section 22-401 - Horns and warning devices (a) Adequacy of horns.- Every motor vehicle when operated on a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. (b) When to be used.- The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn, but may not otherwise use the horn when on a highway. (c) Sirens, whistles, and bells prohibited.- No vehicle may be equipped with nor may any person use on a vehicle any siren, whistle, or bell, except as otherwise permitted in this section.

Massachussets

Section 16. No person shall operate a motor vehicle, nor shall any owner of such vehicle permit it to be operated, in or over any way, public or private, whether laid out under authority of law or otherwise, which motor vehicles are prohibited from using, provided notice of such prohibition is conspicuously posted at the entrance to such way. No person shall operate a motor vehicle, nor shall any owner of such vehicle permit it to be operated upon any way, except fire department and fire patrol apparatus, unless such motor vehicle is equipped with a muffler to prevent excessive or unnecessary noise, which muffler is in good working order and in constant operation, and complies with such minimum standards for construction and performance as the registrar may prescribe. No person shall use a muffler cut-out or by-pass. No person shall operate a motor vehicle on any way which motor vehicle is equipped (1) with a muffler from which the baffle plates, screens or other original internal parts have been removed and not replaced; or (2) with an exhaust system which has been modified in a manner which will amplify or increase the noise emitted by the exhaust. No person operating a motor vehicle shall sound a bell, horn or other device, nor in any manner operate such motor vehicle so as to make a harsh, objectionable or unreasonable noise, nor permit to escape from such vehicle smoke or pollutants in such amounts or at such levels as may violate motor vehicle air pollution control regulations adopted under the provisions of chapter one hundred and eleven. No siren shall be mounted upon any motor vehicle except fire apparatus, ambulances, vehicles used in official line of duty by any member of the police or fire fighting forces of the commonwealth or any agency or political subdivision thereof, and vehicles owned by call fire fighters or by persons with police powers and operated in official line of duty, unless authorized by the registrar. No person shall use on or in connection with any motor vehicle a spot light, so called, the rays from which shine more than two feet above the road at a distance of thirty feet from the vehicle, except that such a spot light may be used for the purpose of reading signs, and as an auxiliary light in cases of necessity when the other lights required by law fail to operate.

Michigan

MICHIGAN VEHICLE CODE 257.706 Horn or other warning device; siren, whistle, air horn, or bell; theft alarm signal device. (a) A motor vehicle, including a motorcycle or moped, when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet but a horn or other warning device shall not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use the horn when upon a highway. A vehicle shall not be equipped with nor shall a person use upon a vehicle a siren, whistle, or bell, except as otherwise permitted in this section. A commercial vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal.(d) An authorized emergency vehicle may be equipped with a siren, whistle, air horn, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law. In those cases the driver of the vehicle shall sound the siren when necessary to warn pedestrians and other drivers of the approach of the vehicle. (e) A motor vehicle licensed as an historic vehicle may be equipped with a siren, whistle, or bell which may be used when participating in a parade, exhibition, tour, or similar event.

Minnesota

2018 Minnesota Statutes 169.68 HORN, SIREN - (a) Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. However, the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. (b) A vehicle must not be equipped with, and a person shall not use upon a vehicle, any siren, whistle, or bell, except as otherwise permitted in this section. It is permissible, but not required, for any commercial vehicle to be equipped with a theft alarm signal device, so arranged that it cannot be used by the driver as an ordinary warning signal. All authorized emergency vehicles must be equipped with a siren capable of emitting sound audible under normal conditions from a distance of not less than 500 feet and of a type conforming to the federal certification standards for sirens, as determined by the General Services Administration. However, the siren must not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of the vehicle shall sound the siren when necessary to warn pedestrians and other drivers of the vehicle's approach.

Mississippi

2013 Mississippi Code 63-7-65 - Horns and other warning devices (1) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn upon a highway. No horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle.Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the department. No such siren shall be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound such siren when necessary to warn pedestrians and other drivers of the approach thereof.(3) No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. No bicycle shall be equipped with nor shall any person use upon a bicycle any siren or whistle.(4) Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal.

Missouri

Missouri Law 307.170.  Other equipment of motor vehicles — violations, penalty. — 1. Signaling devices: Every motor vehicle shall be equipped with a horn, directed forward, or whistle in good working order, capable of emitting a sound adequate in quantity and volume to give warning of the approach of such vehicle to other users of the highway and to pedestrians. Such signaling device shall be used for warning purposes only and shall not be used for making any unnecessary noise, and no other sound-producing signaling device shall be used at any time.

Montana

Montana Code 61-9-401 - Horns, security alarms, and warning devices. (1) A motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. A horn or other warning device may not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to ensure safe operation give audible warning with the horn but may not otherwise use the horn when upon a highway. (2) A vehicle may not be equipped with and a person may not use upon a vehicle a siren, whistle, or bell, except as otherwise permitted in this section. (3) A vehicle may be equipped with a security alarm signal device that cannot be used by the driver as an ordinary warning signal while the vehicle is in motion. (4) An authorized emergency vehicle may be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet and of a type approved by the department. The siren may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which event the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the vehicle's approach.

Nebraska

2006 Nebraska Revised Statutes - § 60-6,285 — Horn; requirements; prohibited acts - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet. Except as otherwise provided in this section, it shall be unlawful for any vehicle to be equipped with or for any person to use upon a vehicle any siren, exhaust, compression, or spark plug whistle or for any person at any time to use a horn, otherwise than as a reasonable warning, or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Every police and fire department and fire patrol vehicle and every ambulance used for emergency calls shall be equipped with a bell, siren, or exhaust whistle.

Nevada

NRS 484D.400 - Horns and other warning devices - 1. Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. A person driving a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. A vehicle must not be equipped with, and a person shall not use upon a vehicle, a siren, whistle or bell, except as otherwise provided in this chapter. It is permissible, but not required, to equip a vehicle with a theft alarm which is arranged so that it cannot be used by the driver as an ordinary warning signal.

New Hampshire

1. Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. 2. A person driving a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. 3. A vehicle must not be equipped with, and a person shall not use upon a vehicle, a siren, whistle or bell, except as otherwise provided in this chapter. 4. It is permissible, but not required, to equip a vehicle with a theft alarm which is arranged so that it cannot be used by the driver as an ordinary warning signal.

New Jersey

2013 New Jersey Revised Statutes 39:3-69: Horns and audible warning devices - Every motor vehicle except a motor-drawn vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn when upon a highway.

New Mexico

2006 New Mexico Statutes - 66-3-843 — Horns and warning devices Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall be used which does not produce a harmonious sound. The driver of a motor vehicle shall when reasonably necessary to ensure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway.

New York

Article 9 Section 375(a) - Every motor vehicle, operated or driven upon the public highways of the state, shall be provided with adequate brakes and steering mechanism in good working order and sufficient to control such vehicle at all times when the same is in use, and a suitable and adequate horn or other device for signaling, which horn or device shall produce a sound sufficiently loud to serve as a danger warning but shall not be used other than as a reasonable warning nor be unnecessarily loud or harsh.

North Carolina

20-125. Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, and it shall be unlawful, except as otherwise provided in this section, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, compression or spark plug whistle or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonable loud or harsh sound by means of a horn or other warning device. All such horns and warning devices shall be maintained in good working order and shall conform to regulation not inconsistent with this section to be promulgated by the Commissioner

North Dakota

Century Code 39-21-36. Horn and warning device - While being operated upon a highway, every motor vehicle must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet [60.96 meters], but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. Whenever reasonably necessary for safe operation, the driver of a motor vehicle upon a highway shall give audible warning with the vehicle's horn, but may not otherwise use the vehicle's horn while upon a highway. 2. No vehicle may be equipped with nor may any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. 3. Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. 4. Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet [152.4 meters] and of a type approved by the department, but the siren may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which events the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of approaching vehicles.

Ohio

Ohio Code 4513.21 Horns, sirens, and warning devices - (A) Every motor vehicle or trackless trolley when operated upon a highway shall be equipped with a horn which is in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet. No motor vehicle or trackless trolley shall be equipped with, nor shall any person use upon a vehicle, any siren, whistle, or bell. Any vehicle may be equipped with a theft alarm signal device which shall be so arranged that it cannot be used as an ordinary warning signal. Every emergency vehicle shall be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type approved by the director of public safety. Such equipment shall not be used except when such vehicle is operated in response to an emergency call or is in the immediate pursuit of an actual or suspected violator of the law, in which case the driver of the emergency vehicle shall sound such equipment when it is necessary to warn pedestrians and other drivers of the approach thereof. (B) Whoever violates this section is guilty of a minor misdemeanor.

Oklahoma

2014 Oklahoma Statutes Title 47. Motor Vehicles §47-12-401 Horns and warning devices - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with a horn but shall not otherwise use such horn when upon a highway. B. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, except as otherwise permitted in subsection D of this section. C. Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. A theft alarm signal device shall not use a siren, as described in subsection D of this section. D. Every authorized emergency vehicle shall, in addition to any other equipment and distinctive markings required by this title, be equipped with a siren, or similar device, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the Department of Public Safety, but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound said siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof. E. It shall be unlawful for any person to use a device capable of producing auditory warning signals similar to that on an authorized emergency vehicle or to use audible signal equipment from a motor vehicle for the purpose of causing any other motor vehicle operator to yield right-of-way and stop, or which actually causes any other motor vehicle operator to yield the right-of-way and stop, whether intended or not. The provisions of this subsection shall not apply to the operators of authorized emergency vehicles.

Oregon

2017 ORS 815.225 Violation of use limits on sound equipment - A person commits the offense of violation of use limits on sound equipment if the person does any of the following: Uses upon a vehicle, any bell, siren, compression or exhaust whistle. Uses a horn otherwise than as a reasonable warning or makes any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Authorized emergency vehicles and ambulances are not subject to this section but are subject to ORS 820.370 (Ambulance or emergency vehicle sirens) and 820.380 (Illegal ambulance or emergency vehicle sirens). (3) The offense described in this section, violation of use limits on sound equipment, is a Class C traffic violation. [1983 c.338 §491]

Pennsylvania

2010 Pennsylvania CodeTitle 75 - 4535. Audible warning devices. (a) General rule.--Every motor vehicle operated on a highway shall be equipped with a horn or other audible warning device of a type approved in regulations of the department.(b) Certain sound devices prohibited.--Except as specifically provided in this part or by regulations of the department, no vehicle operated on a highway shall be equipped with a siren, bell, whistle or any device emitting a similar sound or any unreasonably loud or harsh sound. (c) Exceptions.--This section shall not apply to any special mobile equipment, commercial implement of husbandry or implement of husbandry that is not so equipped by the original manufacturer.

Rhode Island

2012 Rhode Island General Laws § 31-23-8 Horn required. – Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200'). However, no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his or her horn but shall not otherwise use the horn when upon a highway. Violations of this section are subject to fines enumerated in § 31-41.1-4.

South Carolina

2012 South Carolina Code of Laws Section 56-5-4960 - Use of horn - The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn when upon a highway.

South Dakota

South Dakota State Law 32-15-11.   Sirens, whistles, and unnecessary loud noises as misdemeanor. It is a Class 2 misdemeanor, except as otherwise provided in § 32-15-12, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, or any compression or spark plug whistle, or any exhaust horn, or whistle which does not produce a harmonious sound, or for any person at any time to use a horn otherwise than a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Tennesse

Tennessee Code 55-9-201. Horn — Bells, sirens or exhaust whistles on emergency vehicles - (a) Every motor vehicle, when operated upon any road, street or highway of the state, shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200¢), and it is unlawful, except as otherwise provided in this section, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, exhaust, compression or spark plug whistle or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Texas

Texas Transportation Code § 547.501. Audible Warning Devices - (a) A motor vehicle shall be equipped with a horn in good working condition that emits a sound audible under normal conditions at a distance of at least 200 feet. (b) A vehicle may not be equipped with and a person may not use on a vehicle a siren, whistle, or bell unless the vehicle is: (1) a commercial vehicle that is equipped with a theft alarm signal device arranged so that the device cannot be used as an ordinary warning signal;  or (2) an authorized emergency vehicle that is equipped with a siren, whistle, or bell that complies with Section 547.702 . (c) A motor vehicle operator shall use a horn to provide audible warning only when necessary to insure safe operation. (d) A warning device, including a horn, may not emit an unreasonably loud or harsh sound or a whistle.

Utah

Utah Code 41-6a-1625. Horns and warning devices -- Emergency vehicles.

(1) A motor vehicle operated on a highway shall be equipped with a horn or other warning device in good working order.The horn or other warning device: shall be capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; and may not emit an unreasonably loud or harsh sound or a whistle.The operator of a motor vehicle: when reasonably necessary to insure safe operation, shall give audible warning with the horn; and except as provided under Subsection (1)(c)(i), may not use the horn on a highway.

(2) Except as provided under this section, a vehicle may not be equipped with and a person may not use on a vehicle a siren, whistle, or bell.A vehicle may be equipped with a theft alarm signal device if it is arranged so that it cannot be used by the operator as an ordinary warning signal. A theft alarm signal device may: use a whistle, bell, horn or other audible signal; and not use a siren. An authorized emergency vehicle shall be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet. The type of sound shall be approved by the department based on standards adopted by rules under Section 41-6a-1601. The siren on an authorized emergency vehicle may not be used except: when the vehicle is operated in response to an emergency call; or in the immediate pursuit of an actual or suspected violator of the law. The operator of an authorized emergency vehicle shall sound the siren in accordance with this section when reasonably necessary to warn pedestrians and other vehicle operators of the approach of the authorized emergency vehicle. A violation of this section is an infraction.

Vermont

Vermont Statutes Title 23 Motor Vehicles Chapter 13 OPERATION OF VEHICLES § 1131 Warning signal - The operator of a motor vehicle, whenever reasonably necessary to ensure safe operation, shall give an audible warning with the horn of his or her vehicle but shall not otherwise use the horn when upon a highway.

Virginia

§ 46.2-1059. Horns. Every motor vehicle driven on a highway shall be equipped with a working horn capable of emitting sound audible under normal conditions for at least 200 feet. § 46.2-1060. Illegal sirens, whistles, etc.; unlawful use of warning devices; exceptions. It shall be unlawful for any vehicle to be equipped with or for any person to use on any vehicle any siren or exhaust, compression or spark plug whistle, or horn except as may be authorized in this title. It shall be unlawful for any vehicle operated on a public highway to be equipped with any warning device that is not of a type that has been approved by the Superintendent. It shall further be unlawful for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. However, vehicles of common carriers or extraordinarily large and heavy vehicles may be equipped with such type of warning device as the Superintendent may require or permit. Notwithstanding the provisions of this article, a siren, bell, or supplemental horn may be used on a vehicle as a noisemaker for an alarm system if the device is installed so as to prohibit actuation of the system by the driver while the vehicle is in motion.

Washington

RCW 46.37.380 Horns, warning devices, and theft alarms. (1) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his or her horn but shall not otherwise use such horn when upon a highway. (2) No vehicle may be equipped with nor may any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. (3) It is permissible for any vehicle to be equipped with a theft alarm signal device so long as it is so arranged that it cannot be used by the driver as an ordinary warning signal. Such a theft alarm signal device may use a whistle, bell, horn, or other audible signal but shall not use a siren. (4) Any authorized emergency vehicle may be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type conforming to rules adopted by the state patrol, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of its approach..

West Virginia

2012 West Virginia Code - 17C-15-33. Horns and warning devices - (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. It is permissible but not required that any commercial vehicle be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type approved by the department, but such siren shall not be used except when such vehicle is operated in response to an emergency or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound said siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof.

Wisconsin

2011 Wisconsin Code 347.38 Horns and warning devices - No person shall operate a motor vehicle upon a highway unless such motor vehicle is equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no person shall at any time use a horn otherwise than as a reasonable warning or make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Except as otherwise provided in this section, no vehicle shall be equipped with nor shall any person use upon a vehicle any siren or compression or exhaust whistle.Any vehicle may be equipped with a theft alarm signal device if such device is so arranged that it cannot be used by the driver as an ordinary warning signal.An authorized emergency vehicle shall be equipped with a siren, but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, when responding to but not upon returning from a fire alarm, when transporting an organ for human transplantation, or when transporting medical personnel for the purpose of performing human organ harvesting or transplantation immediately after the transportation, in which events the driver of such vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers.

Wyoming

2011 Wyoming Statutes Title 31-5-952. Horns and warning devices (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use the horn when upon a highway. (b) No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle or bell, except as otherwise permitted in this section.(c) Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. The theft alarm signal device may use a whistle, bell, horn or other audible signal but shall not use a siren. (d) Every authorized emergency vehicle, except wreckers, shall be equipped with a siren, whistle or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the superintendent, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which case the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof. (e) This section applies to motorcycles, motor-driven cycles, multipurpose vehicles and mopeds.

**THIS IS ONLY A COLLECTION OF THE MOST CURRENT LAWS THAT WE COULD FIND AND IS IN NO WAY INTENDED TO BE COMPLETE OR UP TO DATE AND SHOULD NOT BE USED AS A LEGAL REFERENCE IN ANY WAY**

Alabama

Alabama Code - Section 32-5-213 : Horns and warning devices - It shall be unlawful for any vehicle to be equipped with or for any person to use upon a vehicle any siren or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Alaska

Alaska Admin Code 04.210 - No vehicle may be equipped with, nor may a person use, a siren, whistle, or bell, except as otherwise permitted in this section. A vehicle may be equipped with a theft alarm signal device, which is installed so that it cannot be used by the driver as an ordinary warning signal. A theft alarm signal device may use a whistle, bell, horn or other audible signal, but may not use a siren.

Arizona

Law 28-954. Horns and Warning Devices - A motor vehicle when operated on a highway shall be equipped with a horn that is in good working order and that is capable of emitting sound audible under normal conditions from a distance of at least two hundred feet. Any horn or other warning device shall not emit an unreasonably loud or harsh sound or a whistle. If reasonably necessary to ensure the safe operation of a motor vehicle, the driver shall give an audible warning with the driver's horn but shall not otherwise use the horn when on a highway. A vehicle shall not be equipped with and a person shall not use on a vehicle a siren, whistle or bell, except as otherwise permitted in this section. A vehicle may but is not required to be equipped with a theft alarm signal device that is arranged so that it cannot be used by the driver as an ordinary warning signal.

Arkansas

27-37-202. Horns and warning devices - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200'). No horn or other warning devices shall emit an unreasonably loud or harsh sound or a whistle.When reasonably necessary to ensure safe operation, the driver of a motor vehicle shall give audible warning with his or her horn but shall not otherwise use the horn when upon a public street or highway.

California

Vehicle Code section 27000(a): A motor vehicle shall be equipped with a horn in good working order and able to emit sound audible under normal conditions from a distance of not less than 200 feet, however, the horn shall not emit an unreasonably loud or harsh sound.

Colorado

Statute 42-4-224. Horns or warning devices - Every motor vehicle when operated upon a highway, shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound, except as provided in section 42-4-213 (1) in the case of authorized emergency vehicles or as provided in section 42-4-222. The driver of a motor vehicle, when reasonably necessary to ensure safe operation, shall give audible warning with the horn but shall not otherwise use such horn when upon a highway.

Connecticut

Dont have any specific laws for horns, but their noise ordinance law Sections 14-80a-1a through 14-80a-10a do not apply to the sound generated by a warning device, such as a horn or siren installed in a motor vehicle, unless such a device is intentionally sounded in order to preclude an otherwise valid noise emission measurement.

Delaware

4306 Horns and other sound devices; unlawful use. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. Except as otherwise provided, no vehicle shall be equipped with and no person shall use upon a vehicle any siren, exhaust, compression or spark plug whistle. The driver of a vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the horn but shall not otherwise use the horn for any other purpose. No driver of any vehicle shall use a horn: To make unreasonably loud or harsh sound; when stationary; or when passing an animal-drawn vehicle or bicycle under normal conditions where no imminent danger of a collision exists.

Florida

Florida Statutes 316.271 – Horns and warning devices - No horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. No vehicle shall be equipped with, nor shall any person use upon a vehicle, any siren, whistle, or bell, except as otherwise permitted in this section.

Georgia

Georgia code 40-8-70. Horns and warning devices - (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when it is reasonably necessary to ensure safe operation, give audible warning with his or her horn but shall not otherwise use such horn when upon a highway. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell except as otherwise permitted in this Code section and Code Section 40-8-94. No vehicle shall be equipped with a theft alarm signal device which is so arranged that it can be used by the driver as an ordinary warning signal.

Hawaii

Sec. 15-19.27 Horns and warning devices.(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his or her horn; but shall not otherwise use such horn when upon a highway.

Idaho

Sec. 15-19.27 Horns and warning devices.(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his or her horn; but shall not otherwise use such horn when upon a highway.

Illinois

625 ILCS 5/12-601 Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonable loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway.”

Indiana

Indiana Code 9-19-5-2. Use of horn during operation of vehicle- Sec. 2. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn on the motor vehicle but may not otherwise use the horn when upon a highway. Sec. 3. (a) Except as provided in subsection (b): a vehicle may not be equipped with; and a person may not use upon a vehicle; a siren, whistle, or bell. An authorized emergency vehicle may be equipped with a siren, whistle, or bell that is capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the department. A siren authorized under this section may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violation of the law. The person who drives a vehicle equipped with a siren under this section shall sound the siren when reasonably necessary to warn pedestrians and other persons who are driving vehicles of the approach of the authorized vehicle.

Iowa

2016 Iowa Code Section 321.432 - Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with the horn but shall not otherwise use such horn when upon a highway.

Kansas

2015 Kansas Statutes 8-1738. Horns and warning devices. (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or whistle. The driver of a motor vehicle when reasonably necessary to insure safe operation shall give audible warning with his horn but shall not otherwise use such horn when upon a highway.

Kentucky

Motor Vehicles Traffic Regulation 189.080 Horns and other sound devices. Every motor vehicle, when in use on a highway, shall be equipped with a horn or other device capable of making an abrupt sound sufficiently loud to be heard from a distance of at least two hundred (200) feet under all ordinary traffic conditions. Every person operating an automobile or bicycle shall sound the horn or sound device whenever necessary as a warning of the approach of such vehicle to pedestrians or other vehicles, but shall not sound the horn or sound device unnecessarily. A bell may be used on a bicycle.

Louisiana

RS 32:351 — Horns and warning devices - A.(1) Every motor vehicle when operated upon a highway of this state shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with his horn, but shall not otherwise use such horn when upon a highway of this state. (2) Persons with mobility impairments, while operating a motor vehicle upon any state or local highway of this state, may utilize the horn of such vehicle if the nature of the operator's physical impairment requires use of the horn in a situation other than one required to ensure safe operation of the motor vehicle and the operator is operating a motor vehicle with a mobility-impaired license plate or the operator has been issued a mobility-impaired hang tag.

Maine

Title 29A 1903. ADEQUATE SIGNALING DEVICE; USE 1. Signaling device required. A person may not operate a motor vehicle without a suitable and adequate horn or other device for signaling.2. Unnecessarily sounded. A person may not unnecessarily sound a signaling device or horn.

Maryland

2010 Maryland Code Section 22-401 - Horns and warning devices (a) Adequacy of horns.- Every motor vehicle when operated on a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. (b) When to be used.- The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn, but may not otherwise use the horn when on a highway. (c) Sirens, whistles, and bells prohibited.- No vehicle may be equipped with nor may any person use on a vehicle any siren, whistle, or bell, except as otherwise permitted in this section.

Massachusetts

Section 16. No person shall operate a motor vehicle, nor shall any owner of such vehicle permit it to be operated, in or over any way, public or private, whether laid out under authority of law or otherwise, which motor vehicles are prohibited from using, provided notice of such prohibition is conspicuously posted at the entrance to such way. No person shall operate a motor vehicle, nor shall any owner of such vehicle permit it to be operated upon any way, except fire department and fire patrol apparatus, unless such motor vehicle is equipped with a muffler to prevent excessive or unnecessary noise, which muffler is in good working order and in constant operation, and complies with such minimum standards for construction and performance as the registrar may prescribe. No person shall use a muffler cut-out or by-pass. No person shall operate a motor vehicle on any way which motor vehicle is equipped (1) with a muffler from which the baffle plates, screens or other original internal parts have been removed and not replaced; or (2) with an exhaust system which has been modified in a manner which will amplify or increase the noise emitted by the exhaust. No person operating a motor vehicle shall sound a bell, horn or other device, nor in any manner operate such motor vehicle so as to make a harsh, objectionable or unreasonable noise, nor permit to escape from such vehicle smoke or pollutants in such amounts or at such levels as may violate motor vehicle air pollution control regulations adopted under the provisions of chapter one hundred and eleven. No siren shall be mounted upon any motor vehicle except fire apparatus, ambulances, vehicles used in official line of duty by any member of the police or fire fighting forces of the commonwealth or any agency or political subdivision thereof, and vehicles owned by call fire fighters or by persons with police powers and operated in official line of duty, unless authorized by the registrar. No person shall use on or in connection with any motor vehicle a spot light, so called, the rays from which shine more than two feet above the road at a distance of thirty feet from the vehicle, except that such a spot light may be used for the purpose of reading signs, and as an auxiliary light in cases of necessity when the other lights required by law fail to operate.

Michigan

MICHIGAN VEHICLE CODE 257.706 Horn or other warning device; siren, whistle, air horn, or bell; theft alarm signal device. (a) A motor vehicle, including a motorcycle or moped, when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet but a horn or other warning device shall not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use the horn when upon a highway. A vehicle shall not be equipped with nor shall a person use upon a vehicle a siren, whistle, or bell, except as otherwise permitted in this section. A commercial vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal.(d) An authorized emergency vehicle may be equipped with a siren, whistle, air horn, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law. In those cases the driver of the vehicle shall sound the siren when necessary to warn pedestrians and other drivers of the approach of the vehicle. (e) A motor vehicle licensed as an historic vehicle may be equipped with a siren, whistle, or bell which may be used when participating in a parade, exhibition, tour, or similar event.

Minnesota

2018 Minnesota Statutes 169.68 HORN, SIREN - (a) Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. However, the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. (b) A vehicle must not be equipped with, and a person shall not use upon a vehicle, any siren, whistle, or bell, except as otherwise permitted in this section. It is permissible, but not required, for any commercial vehicle to be equipped with a theft alarm signal device, so arranged that it cannot be used by the driver as an ordinary warning signal. All authorized emergency vehicles must be equipped with a siren capable of emitting sound audible under normal conditions from a distance of not less than 500 feet and of a type conforming to the federal certification standards for sirens, as determined by the General Services Administration. However, the siren must not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of the vehicle shall sound the siren when necessary to warn pedestrians and other drivers of the vehicle's approach.

Mississippi

2013 Mississippi Code 63-7-65 - Horns and other warning devices (1) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn upon a highway. No horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle.Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the department. No such siren shall be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound such siren when necessary to warn pedestrians and other drivers of the approach thereof.(3) No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. No bicycle shall be equipped with nor shall any person use upon a bicycle any siren or whistle.(4) Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal.

Missouri

Missouri Law 307.170.  Other equipment of motor vehicles — violations, penalty. — 1. Signaling devices: Every motor vehicle shall be equipped with a horn, directed forward, or whistle in good working order, capable of emitting a sound adequate in quantity and volume to give warning of the approach of such vehicle to other users of the highway and to pedestrians. Such signaling device shall be used for warning purposes only and shall not be used for making any unnecessary noise, and no other sound-producing signaling device shall be used at any time.

Montana

Montana Code 61-9-401 - Horns, security alarms, and warning devices. (1) A motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet. A horn or other warning device may not emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to ensure safe operation give audible warning with the horn but may not otherwise use the horn when upon a highway. (2) A vehicle may not be equipped with and a person may not use upon a vehicle a siren, whistle, or bell, except as otherwise permitted in this section. (3) A vehicle may be equipped with a security alarm signal device that cannot be used by the driver as an ordinary warning signal while the vehicle is in motion. (4) An authorized emergency vehicle may be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet and of a type approved by the department. The siren may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which event the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the vehicle's approach.

Nebraska

2006 Nebraska Revised Statutes - § 60-6,285 — Horn; requirements; prohibited acts - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet. Except as otherwise provided in this section, it shall be unlawful for any vehicle to be equipped with or for any person to use upon a vehicle any siren, exhaust, compression, or spark plug whistle or for any person at any time to use a horn, otherwise than as a reasonable warning, or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Every police and fire department and fire patrol vehicle and every ambulance used for emergency calls shall be equipped with a bell, siren, or exhaust whistle.

Nevada

NRS 484D.400 - Horns and other warning devices - 1. Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. A person driving a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. A vehicle must not be equipped with, and a person shall not use upon a vehicle, a siren, whistle or bell, except as otherwise provided in this chapter. It is permissible, but not required, to equip a vehicle with a theft alarm which is arranged so that it cannot be used by the driver as an ordinary warning signal.

New Hampshire

1. Every motor vehicle when operated upon a highway must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but the horn or other warning device must not emit an unreasonably loud or harsh sound or a whistle. 2. A person driving a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the horn, but shall not otherwise use the horn when upon a highway. 3. A vehicle must not be equipped with, and a person shall not use upon a vehicle, a siren, whistle or bell, except as otherwise provided in this chapter. 4. It is permissible, but not required, to equip a vehicle with a theft alarm which is arranged so that it cannot be used by the driver as an ordinary warning signal.

New Jersey

2013 New Jersey Revised Statutes 39:3-69: Horns and audible warning devices - Every motor vehicle except a motor-drawn vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn when upon a highway.

New Mexico

2006 New Mexico Statutes - 66-3-843 — Horns and warning devices Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall be used which does not produce a harmonious sound. The driver of a motor vehicle shall when reasonably necessary to ensure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway.

New York

Article 9 Section 375(a) - Every motor vehicle, operated or driven upon the public highways of the state, shall be provided with adequate brakes and steering mechanism in good working order and sufficient to control such vehicle at all times when the same is in use, and a suitable and adequate horn or other device for signaling, which horn or device shall produce a sound sufficiently loud to serve as a danger warning but shall not be used other than as a reasonable warning nor be unnecessarily loud or harsh.

North Carolina

20-125. Horns and warning devices. Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, and it shall be unlawful, except as otherwise provided in this section, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, compression or spark plug whistle or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonable loud or harsh sound by means of a horn or other warning device. All such horns and warning devices shall be maintained in good working order and shall conform to regulation not inconsistent with this section to be promulgated by the Commissioner

North Dakota

Century Code 39-21-36. Horn and warning device - While being operated upon a highway, every motor vehicle must be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet [60.96 meters], but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. Whenever reasonably necessary for safe operation, the driver of a motor vehicle upon a highway shall give audible warning with the vehicle's horn, but may not otherwise use the vehicle's horn while upon a highway. 2. No vehicle may be equipped with nor may any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. 3. Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. 4. Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet [152.4 meters] and of a type approved by the department, but the siren may not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which events the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of approaching vehicles.

Ohio

Ohio Code 4513.21 Horns, sirens, and warning devices - (A) Every motor vehicle or trackless trolley when operated upon a highway shall be equipped with a horn which is in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet. No motor vehicle or trackless trolley shall be equipped with, nor shall any person use upon a vehicle, any siren, whistle, or bell. Any vehicle may be equipped with a theft alarm signal device which shall be so arranged that it cannot be used as an ordinary warning signal. Every emergency vehicle shall be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type approved by the director of public safety. Such equipment shall not be used except when such vehicle is operated in response to an emergency call or is in the immediate pursuit of an actual or suspected violator of the law, in which case the driver of the emergency vehicle shall sound such equipment when it is necessary to warn pedestrians and other drivers of the approach thereof. (B) Whoever violates this section is guilty of a minor misdemeanor.

Oklahoma

2014 Oklahoma Statutes Title 47. Motor Vehicles §47-12-401 Horns and warning devices - Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with a horn but shall not otherwise use such horn when upon a highway. B. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, except as otherwise permitted in subsection D of this section. C. Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. A theft alarm signal device shall not use a siren, as described in subsection D of this section. D. Every authorized emergency vehicle shall, in addition to any other equipment and distinctive markings required by this title, be equipped with a siren, or similar device, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the Department of Public Safety, but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound said siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof. E. It shall be unlawful for any person to use a device capable of producing auditory warning signals similar to that on an authorized emergency vehicle or to use audible signal equipment from a motor vehicle for the purpose of causing any other motor vehicle operator to yield right-of-way and stop, or which actually causes any other motor vehicle operator to yield the right-of-way and stop, whether intended or not. The provisions of this subsection shall not apply to the operators of authorized emergency vehicles.

Oregon

2017 ORS 815.225 Violation of use limits on sound equipment - A person commits the offense of violation of use limits on sound equipment if the person does any of the following: Uses upon a vehicle, any bell, siren, compression or exhaust whistle. Uses a horn otherwise than as a reasonable warning or makes any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Authorized emergency vehicles and ambulances are not subject to this section but are subject to ORS 820.370 (Ambulance or emergency vehicle sirens) and 820.380 (Illegal ambulance or emergency vehicle sirens). (3) The offense described in this section, violation of use limits on sound equipment, is a Class C traffic violation. [1983 c.338 §491]

Pennsylvania

2010 Pennsylvania CodeTitle 75 - 4535. Audible warning devices. (a) General rule.--Every motor vehicle operated on a highway shall be equipped with a horn or other audible warning device of a type approved in regulations of the department.(b) Certain sound devices prohibited.--Except as specifically provided in this part or by regulations of the department, no vehicle operated on a highway shall be equipped with a siren, bell, whistle or any device emitting a similar sound or any unreasonably loud or harsh sound. (c) Exceptions.--This section shall not apply to any special mobile equipment, commercial implement of husbandry or implement of husbandry that is not so equipped by the original manufacturer.

Rhode Island

2012 Rhode Island General Laws § 31-23-8 Horn required. – Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200'). However, no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his or her horn but shall not otherwise use the horn when upon a highway. Violations of this section are subject to fines enumerated in § 31-41.1-4.

South Carolina

2012 South Carolina Code of Laws Section 56-5-4960 - Use of horn - The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with his horn but shall not otherwise use such horn when upon a highway.

South Dakota

South Dakota State Law 32-15-11.   Sirens, whistles, and unnecessary loud noises as misdemeanor. It is a Class 2 misdemeanor, except as otherwise provided in § 32-15-12, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, or any compression or spark plug whistle, or any exhaust horn, or whistle which does not produce a harmonious sound, or for any person at any time to use a horn otherwise than a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Tennesse

Tennessee Code 55-9-201. Horn — Bells, sirens or exhaust whistles on emergency vehicles - (a) Every motor vehicle, when operated upon any road, street or highway of the state, shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200¢), and it is unlawful, except as otherwise provided in this section, for any vehicle to be equipped with or for any person to use upon a vehicle any siren, exhaust, compression or spark plug whistle or for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.

Texas

Texas Transportation Code § 547.501. Audible Warning Devices - (a) A motor vehicle shall be equipped with a horn in good working condition that emits a sound audible under normal conditions at a distance of at least 200 feet. (b) A vehicle may not be equipped with and a person may not use on a vehicle a siren, whistle, or bell unless the vehicle is: (1) a commercial vehicle that is equipped with a theft alarm signal device arranged so that the device cannot be used as an ordinary warning signal;  or (2) an authorized emergency vehicle that is equipped with a siren, whistle, or bell that complies with Section 547.702 . (c) A motor vehicle operator shall use a horn to provide audible warning only when necessary to insure safe operation. (d) A warning device, including a horn, may not emit an unreasonably loud or harsh sound or a whistle.

Utah

Utah Code 41-6a-1625. Horns and warning devices -- Emergency vehicles.

(1) A motor vehicle operated on a highway shall be equipped with a horn or other warning device in good working order.The horn or other warning device: shall be capable of emitting sound audible under normal conditions from a distance of not less than 200 feet; and may not emit an unreasonably loud or harsh sound or a whistle.The operator of a motor vehicle: when reasonably necessary to insure safe operation, shall give audible warning with the horn; and except as provided under Subsection (1)(c)(i), may not use the horn on a highway.

(2) Except as provided under this section, a vehicle may not be equipped with and a person may not use on a vehicle a siren, whistle, or bell.A vehicle may be equipped with a theft alarm signal device if it is arranged so that it cannot be used by the operator as an ordinary warning signal. A theft alarm signal device may: use a whistle, bell, horn or other audible signal; and not use a siren. An authorized emergency vehicle shall be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than 500 feet. The type of sound shall be approved by the department based on standards adopted by rules under Section 41-6a-1601. The siren on an authorized emergency vehicle may not be used except: when the vehicle is operated in response to an emergency call; or in the immediate pursuit of an actual or suspected violator of the law. The operator of an authorized emergency vehicle shall sound the siren in accordance with this section when reasonably necessary to warn pedestrians and other vehicle operators of the approach of the authorized emergency vehicle. A violation of this section is an infraction.

Vermont

Vermont Statutes Title 23 Motor Vehicles Chapter 13 OPERATION OF VEHICLES § 1131 Warning signal - The operator of a motor vehicle, whenever reasonably necessary to ensure safe operation, shall give an audible warning with the horn of his or her vehicle but shall not otherwise use the horn when upon a highway.

Virginia

§ 46.2-1059. Horns. Every motor vehicle driven on a highway shall be equipped with a working horn capable of emitting sound audible under normal conditions for at least 200 feet. § 46.2-1060. Illegal sirens, whistles, etc.; unlawful use of warning devices; exceptions. It shall be unlawful for any vehicle to be equipped with or for any person to use on any vehicle any siren or exhaust, compression or spark plug whistle, or horn except as may be authorized in this title. It shall be unlawful for any vehicle operated on a public highway to be equipped with any warning device that is not of a type that has been approved by the Superintendent. It shall further be unlawful for any person at any time to use a horn otherwise than as a reasonable warning or to make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. However, vehicles of common carriers or extraordinarily large and heavy vehicles may be equipped with such type of warning device as the Superintendent may require or permit. Notwithstanding the provisions of this article, a siren, bell, or supplemental horn may be used on a vehicle as a noisemaker for an alarm system if the device is installed so as to prohibit actuation of the system by the driver while the vehicle is in motion.

Washington

RCW 46.37.380 Horns, warning devices, and theft alarms. (1) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device may emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his or her horn but shall not otherwise use such horn when upon a highway. (2) No vehicle may be equipped with nor may any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. (3) It is permissible for any vehicle to be equipped with a theft alarm signal device so long as it is so arranged that it cannot be used by the driver as an ordinary warning signal. Such a theft alarm signal device may use a whistle, bell, horn, or other audible signal but shall not use a siren. (4) Any authorized emergency vehicle may be equipped with a siren, whistle, or bell capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type conforming to rules adopted by the state patrol, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of its approach..

West Virginia

2012 West Virginia Code - 17C-15-33. Horns and warning devices - (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a highway. No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle, or bell, except as otherwise permitted in this section. It is permissible but not required that any commercial vehicle be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. Any authorized emergency vehicle may be equipped with a siren, whistle, or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type approved by the department, but such siren shall not be used except when such vehicle is operated in response to an emergency or in the immediate pursuit of an actual or suspected violator of the law, in which said latter events the driver of such vehicle shall sound said siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof.

Wisconsin

2011 Wisconsin Code 347.38 Horns and warning devices - No person shall operate a motor vehicle upon a highway unless such motor vehicle is equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no person shall at any time use a horn otherwise than as a reasonable warning or make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. Except as otherwise provided in this section, no vehicle shall be equipped with nor shall any person use upon a vehicle any siren or compression or exhaust whistle.Any vehicle may be equipped with a theft alarm signal device if such device is so arranged that it cannot be used by the driver as an ordinary warning signal.An authorized emergency vehicle shall be equipped with a siren, but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, when responding to but not upon returning from a fire alarm, when transporting an organ for human transplantation, or when transporting medical personnel for the purpose of performing human organ harvesting or transplantation immediately after the transportation, in which events the driver of such vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers.

Wyoming

2011 Wyoming Statutes Title 31-5-952. Horns and warning devices (a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use the horn when upon a highway. (b) No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle or bell, except as otherwise permitted in this section.(c) Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. The theft alarm signal device may use a whistle, bell, horn or other audible signal but shall not use a siren. (d) Every authorized emergency vehicle, except wreckers, shall be equipped with a siren, whistle or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the superintendent, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which case the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof. (e) This section applies to motorcycles, motor-driven cycles, multipurpose vehicles and mopeds.