12.52.110: QUIET ZONES DESIGNATED; VEHICLE OPERATION RESTRICTIONS:
The streets or parts of streets described in section 12.104.030, "Schedule 2, Quiet Zones", of this title and made a part hereof, are hereby declared to be "quiet zones". It is unlawful for any person to operate any motor vehicle in an excessively loud or unusually noisy manner in a "quiet zone". (Amended during 1/88 supplement: prior code title 46, art. 15 § 250)