Salt Lake County, UT Noise Ordinances: Vehicle Noise (2026)

Vehicle noise in unincorporated Salt Lake County is governed by a combination of Utah Code Title 41 (Motor Vehicles) and Salt Lake County Code Title 6. Utah Code 41-6a-1626 requires every motor vehicle to be equipped with a muffler in good working order and prohibits modifications that amplify exhaust beyond the original equipment level. Cutouts, straight pipes, exhaust whistles, and bypass devices are illegal on public roads. Engine revving, squealing tires, repeated racing, and drifting are cited as reckless driving, exhibition driving, or a county noise nuisance depending on circumstances. Amplified stereos that are plainly audible at 50 feet from the vehicle are a common citation basis, particularly late at night in Magna, Kearns, and Millcreek area neighborhoods. Diesel pickups performing rolling coal, excessive idling in residential areas, and aftermarket motorcycle exhausts above factory levels are similarly enforceable. Penalties include traffic infraction fines and potential equipment repair orders. Unified Police Department patrols unincorporated areas and enforces these provisions, and repeat offenders may see escalating penalties and impoundment for street racing events. Emergency vehicles, authorized construction equipment, and parade participants are exempt when engaged in official operations.