No person shall use any mechanical braking device on any motor vehicle, except to avoid imminent danger to persons or property. A mechanical braking device, commonly referred to as a Jake or Jacob brake, is one used primarily on trucks and buses to convert a motor from an internal combustion engine to an air compressor for the purpose of vehicle braking without the use of wheel brakes. (Ord. 1986 § 3 (Exh. A), 2014)