(a) It shall be unlawful, except to avert imminent danger, for any person to use a dynamic braking device or engine brakes, or to otherwise discharge into the ambient air the blowdown at any stream or the exhaust of any internal combustion engine, unless such discharge be through an appropriate muffler.
(b) For the purpose of this section, use of a dynamic braking device or engine brakes shall be defined as a device which when activated retards one or more pistons on the engine of a truck or other motor vehicle in order to assist the truck or motor vehicle in braking and in the process of doing so creates a loud and offensive noise from the truck or motor vehicle.
Source: Ord. No. 4353, § 1, 7-20-98; Ord. No. 4458, § 1, 4-3-00