Every motor vehicle shall be equipped with a good and sufficient audible signalling device in efficient working condition. Such signalling device shall be sounded when necessary to give timely warning of the approach of a vehicle, but such horn or other signalling device shall not be sounded for any purpose other than as a warning of impending danger.
No motor vehicle other than an emergency vehicle shall be equipped with a siren or gong signalling device.
(Prior code § 10.604).