Whenever authorized signs and/or markings are erected indicating a zone of quiet, no person in charge or control of any vehicle or any device connected therewith shall make any excessive noise, unnecessarily race his motor, or open the muffler on any vehicle, or permit such vehicle or any device thereon to emit an unreasonable amount of noise.
(Ord. 894, passed 1-5-1950; Ord. 1311, passed 1-5-1956)