Rock County sets no vehicle-noise decibel limit. Loud mufflers and exhaust are governed statewide by Wis. Stat. 347.39, which requires an adequate muffler that prevents excessive or unusual noise. Cities add local nuisance rules.
There is no countywide Rock County ordinance on vehicle noise. Statewide, Wis. Stat. 347.39(1) requires every motor vehicle to have a muffler in good working order that prevents excessive or unusual noise, and bars muffler cutouts or bypasses on highways. Loud car stereos or revving in public also fall under Janesville's 9.42.020 ban on loud or raucous amplified and unnecessary noise. Enforcement is by local police and the county sheriff on the roads. For chronic vehicle-noise disturbances not on a highway, the disorderly-conduct statute 947.01 can apply.
A defective-muffler or excessive-noise violation under Wis. Stat. 347.39 is a non-criminal traffic forfeiture. Local nuisance-noise citations in Janesville run about $25 to $500 plus costs.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Beloit, WI
Beloit manages parking around downtown, Beloit College campus, and the Ho-Chunk casino area. Winter alternate-side parking enables snow plowing on city streets.
Beloit, WI
Beloit restricts commercial vehicle parking in residential zones. Weight, size, and signage limits apply. Overnight heavy truck storage prohibited.
Beloit, WI
Beloit requires vehicles parked on improved surfaces. Front lawn parking prohibited. Driveway modifications require permits.
Beloit, WI
The City of Beloit regulates fence heights and placement under Section 9.28 of the Beloit Municipal Code (Chapter 9 - Building Code), with related setback an...
Beloit, WI
WI Stat. §90.02 to 90.14 provides line fence cost-sharing for rural/agricultural land. Urban residential fences: each owner responsible for their own.
Beloit, WI
Beloit requires dogs on leash in public. Off-leash in designated parks only. Dog licensing required statewide under WI Stat. §174.
See how Beloit's vehicle noise rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.