Horns and Warning Devices on Vehicles

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 or her horn, but shall not otherwise use the 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.Any authorized emergency vehicle may be equipped with a siren, horn, whistle, or bell, capable of emitting sound audible under normal conditions of not less than five hundred (500) feet of a type approved by the Chief of Police, but the siren, horn, whistle, or bell 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 emergency vehicle shall sound the siren, horn, whistle, or bell to warn pedestrians and other drivers of the approach thereof. Any emergency vehicle may be equipped with a red blinker light.Any truck used to haul dirt, sand, rock, concrete, merchandise, farm produce, or other articles or materials which are bulky in nature may be equipped with a horn, whistle, or bell in the rear thereof, capable of emitting a sound audible under normal conditions from a distance of not less than two hundred (200) feet; the warning device, however, to be sounded only while the truck is backing up.