(1) “Brake” means any device used for slowing, halting, or stopping the movement of any vehicle.

(2) “Engine compression brake” means any motor vehicle brake that is operated by the compression of the engine of the motor vehicle or any unit or part thereof. An engine compression brake is also referred to as a “jake brake.”

(3) “Motor vehicle” means and includes automobiles, tractors, trucks, trailers, and transportation equipment of all kinds and sizes, or any combinations of the foregoing.

(4) “Muffled” means fitted with a device that absorbs noise and, therefore, reduces the sound made by the engine compression brake.