Vehicle noise on Michigan roads is set by state law statewide, not by Genesee County. MCL 257.707c caps a passenger car at 76 dBA where the speed limit is 35 mph or under, and 82 dBA above 35 mph, measured at 50 feet.
Roadway motor-vehicle noise in Michigan is governed by state statute, so limits are uniform across Genesee County. MCL 257.707c prohibits operating a motor vehicle on a highway or street if it produces total noise exceeding the stated limits at 50 feet: for passenger cars, 76 dBA at 35 mph or under, 82 dBA above 35 mph, and 95 dBA on a stationary run-up test 20 inches from the tailpipe. Modifying an exhaust to increase noise beyond the vehicle's original level is also prohibited. Flint's local noise ordinance expressly defers to this state act (§ 31-77(d)). Off-road vehicle testing/repair that disturbs neighbors is separately covered by local noise rules.
State civil-infraction enforcement by police; equipment/exhaust violations under the Michigan Vehicle Code. Local noise rules add penalties for driveway vehicle-testing disturbances.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Genesee County's vehicle noise rules stack up against other locations.
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