(A) Definition. ENGINE BRAKING, sometimes referred to in common nomenclature as "jake braking ", but which must not be confused with the registered trademark "Jake Brake " belonging to the Jacobs Vehicle Systems, Inc., shall mean the use or operation of any mechanical exhaust device designed to aid in the braking, decompression or deceleration of a motor vehicle which results in the excessive, loud, unusual or explosive noise from such vehicle in excess of state or federal noise standards for said vehicles.
(B) Offense. Engine braking, as defined in this section, shall be unlawful within the city limits of Pleasanton. Therefore, it shall be unlawful for the driver of any vehicle to use or operate or cause to be used or operated within the city limits any engine brake, jake brake, compression brake, dynamic braking system, mechanical exhaust device, or other similar device designed to aid in the braking or deceleration of any vehicle that results in excessive, loud, unusual or explosive noise from such vehicle.
(C) Exceptions.
(1) The provisions of this section shall not apply to the application of unmuffled compression brakes where necessary for the protection of persons and/or property, which cannot be avoided by application of an alternative braking system.
(2) Noise caused by the application of engine compression brakes, otherwise known as engine braking, which is effectively muffled, or if the application is necessary for the health, safety and welfare of the community, shall be exempt from the provisions of this section.
(3) Sounds created by emergency equipment for emergency purposes shall be exempt.
(4) Sounds created by city-owned and operated equipment shall also be exempt from the provisions of this section.
(5) Sounds created in the case of brake failure or emergencies.
(D) Erection of signs. The Director of Public Works shall be and is hereby specifically authorized to erect such signage as shall be necessary and appropriate for the enforcement of this section.
(Ord. 22-1293, passed 7-21-2022)