Pennsylvania Consolidated & Unconsolidated Statutes
Chapter 45 - Other Required Equipment
Section 4523 - Exhaust systems, mufflers and noise control


(a) Compliance with established sound levels.--Every motor vehicle operated on a highway shall be constructed, equipped, maintained and operated so as not to exceed the sound level for the vehicle as prescribed in regulations promulgated by the department. The test procedures and instrumentation to be utilized shall also be established by regulation.
(b) Compliance with exhaust requirements.--In addition to any requirements established under sections 4531 (relating to emission control systems) and 4532 (relating to smoke control for diesel-powered motor vehicles), every motor vehicle shall be constructed, equipped, maintained and operated so as to prevent engine exhaust gases from penetrating and collecting in any part of the vehicle occupied by the driver or passengers.
(c) Mufflers and related equipment.--Every motor vehicle shall be equipped with a muffler or other effective noise suppressing system in good working order and in constant operation and no muffler or exhaust system shall be equipped with a cutout, bypass or similar device.
(d) Unauthorized modification of equipment.--No person shall 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 the maximum levels permitted under subsection (a) or violate the provisions of subsection (b). Headers and side exhausts are permitted provided the vehicle meets all the requirements of this section.
(e) Fire equipment and racing vehicles.--This section does not apply to fire equipment or to racing vehicles being operated in an organized racing or competitive event conducted under a permit issued by local authorities.

Structure Pennsylvania Consolidated & Unconsolidated Statutes

Pennsylvania Consolidated & Unconsolidated Statutes

Title 75 - VEHICLES

Chapter 45 - Other Required Equipment

Extra - Chapter Notes

Section 4501 - Promulgation of regulations by department

Section 4502 - General requirements for braking systems

Section 4521 - Promulgation of regulations by department

Section 4522 - Effect of amendments to Federal regulations (Repealed)

Section 4523 - Exhaust systems, mufflers and noise control

Section 4524 - Windshield obstructions and wipers

Section 4525 - Tire equipment and traction surfaces

Section 4526 - Safety glass

Section 4527 - Image display device

Section 4528 - Fire extinguishers

Section 4529 - Slow moving vehicle emblem

Section 4530 - Portable emergency warning devices

Section 4531 - Emission control systems

Section 4532 - Smoke control for diesel-powered motor vehicles

Section 4533 - Rear wheel shields

Section 4534 - Rearview mirrors

Section 4535 - Audible warning devices

Section 4536 - Bumpers

Section 4537 - Device used to carry pedalcycles

Section 4551 - Safety regulations

Section 4552 - General requirements for school buses

Section 4553 - General requirements for other vehicles transporting school children

Section 4571 - Visual and audible signals on emergency vehicles

Section 4572 - Visual signals on authorized vehicles

Section 4572.1 - Flashing or revolving lights on tow trucks

Section 4572.2 - Solid waste collection vehicles

Section 4573 - Identification of certain vehicles

Section 4581 - Restraint systems

Section 4582 - Child Passenger Restraint Fund

Section 4583 - Hospital information program

Section 4584 - Oral hazard warning (Deleted by amendment)

Section 4585 - Use of information or evidence of violation of subchapter

Section 4586 - Civil immunity for child passenger safety technicians and lenders of child passenger restraint systems and booster seats