6-7-3: HORN AND WARNING DEVICES:
   A.   Every motor vehicle shall be equipped with a good and sufficient audible signaling device in efficient working condition. Such signaling device shall be sounded when necessary to give timely warning of the approach of a vehicle, but such horn or other signaling device shall not be sounded for any purpose other than as a warning of impending danger.
   B.   No motor vehicle other than an emergency vehicle shall be equipped with a siren or gong signaling device. (Ord. 88, 11-6-1962)