Mufflers; Prevention of Noise

Mufflers; Prevention of Noise. Every motor vehicle subject to registration and operated on a highway shall at all times be equipped with an adequate muffler in constant operation and properly maintained to prevent any excess or unusual noise. No muffler or exhaust system may be equipped with a cut-out, bypass, or similar device. No person may modify the exhaust system of a motor vehicle in a manner which will amplify or increase the noise emitted by the motor of the vehicle above that emitted by the muffler originally installed on the vehicle and the original muffler shall comply with all of the requirements of this section. A “muffler” is a device consisting of a series of chambers or baffle plates, or other mechanical design for the purpose of receiving exhaust gas from an internal combustion engine, and effective in reducing noise. Source: PL 3-61, § 1 (§ 412).