Brakes and horns.
Section 46
SEC. 46. Brakes and horns.—(a) Every motor vehicle shall be provided with brakes adequate and efficient at all times. (b) Every motor vehicle shall be provided with a horn or signaling device in good working order. (c) No horn or signaling device of an exceptionally loud or startling or disagreeable nature shall be installed or used on any motor vehicle. (d) All authorized emergency vehicles, such as ambulances, police and fire wagons, etc., used for emergency calls shall be equipped with a bell, siren, or exhaust whistle of a type approved by the Director of Public Works, but no such device shall be installed or used upon any other vehicle. (e) No vehicle not classified as a motor vehicle under this Act shall be equipped with a horn or signaling device similar to the horn customarily used on motor vehicles.