Horns or 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 shall emit an unreasonably loud or harsh sound. (b) The operator of a motor vehicle, when reasonably necessary to insure safe operation, shall give audible warning with his horn. Such horn shall not otherwise be used. (c) No vehicle shall be equipped with, nor shall any person use upon a vehicle operated on a highway, any siren except as authorized by the Chief of Police. Any authorized emergency vehicle may be equipped with a siren of a type approved by the Chief of Police but such siren shall not be used except when such vehicle is operated in response to an emergency call or when responding to a fire alarm 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 necessary to warn pedestrians and other drivers of the approach thereof. SOURCE: GC § 23108, enacted by P.L. 1-088 (Nov. 29, 1952); repealed and reenacted by P.L. 3-016:3, 4 (July 14, 1955). 2025 NOTE: Reference to the “Director of Public Safety” replaced with the “Chief of Police” pursuant to P.L. 17- 078:1 (Dec. 12, 1984), which repealed language in GC § 5102 that established the Department of Public Safety, and reenacted language to establish the Guam Police Department, the head of which is the Chief of Police.