Vehicle noise enforced under PA Vehicle Code Title 75 §4523 (muffler required) statewide. No countywide Allegheny ordinance. Loud exhaust, modified mufflers, and engine braking restrictions fall on municipal police and PA State Police.
75 Pa.C.S. §4523 requires every motor vehicle to have a muffler in good working order; cutouts and bypasses prohibited. Fines typically $25 plus costs, often $100-$150 total. Jake-brake (engine compression brake) restrictions on commercial trucks are posted locally (common on Route 28, Route 51). Pittsburgh added a stunt-driving ordinance in 2022 targeting street takeovers with vehicle impoundment.
PA §4523: summary fine $25 + costs. Pittsburgh stunt driving: vehicle impoundment + $500 fine.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Allegheny County's vehicle noise rules stack up against other locations.
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