Pennsylvania law 75 Pa.C.S. 4523 sets standards for vehicle noise levels, exhaust systems, and muffler requirements to reduce noise pollution and ensure safety. It prohibits modifications that increase noise and mandates proper exhaust system functioning, with exceptions for fire equipment and racing vehicles. The law also specifies testing procedures and maintenance standards for vehicles on public roads.
Vehicles must be constructed, maintained, and operated so that their sound levels do not exceed the limits established by Pennsylvania regulations, with specific testing procedures in place.
Modifications that increase noise levels beyond legal limits or violate exhaust emission requirements are prohibited. Headers and side exhausts are permitted if they meet all safety and noise standards.
No, this section does not apply to fire equipment or racing vehicles operated in organized events under a permit issued by local authorities.
All vehicles must be equipped with a muffler or an effective noise suppressing system that is in good working order and always in operation.