Passaic County does not regulate vehicle noise. Loud exhaust and modified mufflers are governed by New Jersey state motor-vehicle law and enforced by local and county police; stationary commercial vehicle sound also falls under the statewide Noise Control Act.
Vehicle noise in New Jersey is controlled by statewide motor-vehicle law rather than a Passaic County ordinance. State law requires every motor vehicle to have a muffler in good working order and prohibits amplified or excessive exhaust noise; police may cite drivers for defective or altered exhaust systems. Idling and stationary sound from commercial vehicles at a facility can also violate the N.J.A.C. 7:29 residential property-line limits of 65 dBA (day) and 50 dBA (night). Passaic County Sheriff's officers and municipal police both enforce these rules. There is no separate county decibel standard for vehicles.
Muffler and exhaust violations are enforced under New Jersey Title 39 motor-vehicle law by state, county, and municipal police, carrying motor-vehicle fines and points where applicable.
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See how Passaic County's vehicle noise rules stack up against other locations.
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