Exhaust Noise in Pennsylvania
Pennsylvania requires an adequate muffler and sets PennDOT 50-foot limits of 76–92 dBA by class and speed; there is no 95 dB tailpipe test.
Verified against primary sources · August 2026
What the law says
Exhaust systems are governed by 75 Pa.C.S. § 4523 (not § 4524, which covers windshields). PennDOT's in-use limits (67 Pa. Code § 157.11) range 76–92 dBA measured at 50 feet depending on vehicle class and speed.
Specific Limits
- Test
- 50-ft limits 76–92 dBA by vehicle class and speed (67 Pa. Code § 157.11)
Frequently Asked Questions
Are exhaust noise legal in Pennsylvania?
What are the exact exhaust noise limits in Pennsylvania?
Street-legal exhaust noise picks
Gear that helps you mod without a ticket in Pennsylvania.
Measure your exhaust at the test RPM before a fix-it ticket does.
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