Sec. 611-102. - Mufflers required; standards.
(a) It shall be unlawful for any person to operate any motor vehicle or other machine powered by an internal-combustion engine, which is not equipped with a muffler or similar noise abatement device which will effectively reduce and prevent loud or explosive noises therefrom. With respect to the following vehicles and equipment, the muffling or noise abatement device shall be at least sufficient to eliminate noise emission from the motor vehicle or equipment by the guidelines set forth in the following schedule. The measurements shall be made at least fifty (50) feet from the motor vehicle, device or equipment in question:
(1) Any motor vehicle with a manufacturer's gross vehicle weight rating of seven thousand (7,000) pounds or more:
a. 88 db(A) for vehicles traveling thirty-five (35) miles per hour or less; or
b. 90 db(A) for vehicles traveling over thirty-five (35) miles per hour.
(2) Any motorcycle, motorbike, minicycle or other motor-driver cycle:
a. 82 db(A) for vehicles traveling thirty-five (35) miles per hour or less; or
b. 86 db(A) for vehicles traveling over thirty-five (35) miles per hour.
(3) Any other motor vehicle:
a. 76 db(A) for vehicles traveling thirty-five (35) miles per hour or less; or
b. 82 db(A) for vehicles traveling over thirty-five (35) miles per hour.
(b) All noise limits described in this section shall apply to the total noise from a motor vehicle or other internal-combustion powered devices or equipment, including other vehicles, devices or equipment attached thereto.
(c) It shall be unlawful for any person to possess or to operate any motor vehicle or machine powered by an internal-combustion engine with "straight pipes," "baffles," "muffler cutouts," "bypasses," or any other similar type of exhaust system constructed so that the exhaust bypasses or, without structural alteration, can be operated to bypass the required muffler, muffling device or adequate noise abatement equipment which meets the noise limit standards described in this section.
(d) This section shall not apply to persons who are entrants or participants in a scheduled race or sporting event which involves the use of racing motor vehicles or equipment powered by internal-combustion engines while involved in such activities, nor to owners or operators of internal-combustion powered equipment or devices used in the construction, demolition or similar labor or maintenance trades.
(e) Any person violating this section shall, upon conviction, be punished as prescribed in section 103-3.
(Code 1975, § 29-355)