§ 21-19. Unmuffled exhaust from engine or motor; modifying noise-abatement device on engine or motor.

The discharge, into the open air, of the exhaust of any steam engine, stationary internal combustion engine, motorboat or motor vehicle, except through a muffler or other device which will effectively prevent loud or explosive noises therefrom, is prohibited. Modifying any noise-abatement device on any motor vehicle or engine in a manner so that the noise emitted by such vehicle or engine is increased above that emitted by such vehicle or engine as originally manufactured shall be a violation of this section.