It is unlawful for any person to operate a motor vehicle which shall not at all times be equipped with a muffler upon the exhaust thereof in good working order and in constant operation to prevent excessive or unusual noise. No muffler cut-out, by-pass, or similar muffler elimination device, exhaust, or vacuum whistle shall be used on any motor vehicle while operating within the city; however exhaust whistles may be used on authorized emergency vehicles.
(Prior Code, § 15-304) Penalty, see § 70.999