§291-24  Motorcycles and mopeds,
noisy mufflers; penalty.  (a)  Every motorcycle and moped moving under its
own power on a public highway shall at all times be equipped with a muffler in
constant operation to prevent any excessive or unusual noise and no such
muffler or exhaust system shall be equipped with a cutout, bypass, or similar
device.  No person shall modify the exhaust system of a motorcycle or a moped
in a manner which will amplify or increase the noise emitted by the motor of
such motorcycle or moped above that emitted by the muffler originally installed
on the motorcycle or moped except a motorcycle or moped that:



(1)  Has three wheels;



(2)  Is powered by an electric motor;



(3)  Has a full body enclosed cab; and



(4)  Has a seat belt assembly or a child restraint
system for the driver and passenger;



shall not be required to be equipped with a muffler.



(b)  As used in this section,
"muffler" means a device consisting of a series of chambers or baffle
plates, or other mechanical design, for the purpose of receiving exhaust gas
from the engine of the motorcycle or moped, and being effective in reducing
noise.



(c)  Whoever violates this section shall be
fined not more than $100. [L 1949, c 21, §1; RL 1955, §311-27; HRS §291-24; am
L 1978, c 222, §7; am L 1986, c 189, §1; am L 1994, c 120, §4]