§291-22 Regulation of exhaust pipe and muffler. It shall be unlawful for any person to drive upon the public highways any motor scooter, as defined in section 286-2, the exhaust pipe or muffler of which has been so changed from the factory design as to increase the volume or audibility of the explosions within the motor thereof. [L 1941, c 140, §2; RL 1945, §11718; RL 1955, §311-24; HRS §291-22; am L 1979, c 105, §28]