7-7-6: 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. (1977 Code § 10.44.070; amd. 2013 Code)
   B.   No motor vehicle, other than an emergency vehicle, shall be equipped with a siren or gong signaling device. (1977 Code § 10.44.070)