Vehicle noise in Richmond is regulated under RMC Chapter 9.52 and California Vehicle Code §§27150-27207. Modified exhaust, loud stereos audible 50 feet away, engine revving, and prolonged idling over 5 minutes in residential zones are prohibited. Enforcement is primarily by Richmond Police Department traffic units.
Vehicle noise in Richmond is governed by both local and state law. RMC Chapter 9.52 prohibits unnecessary engine revving, horn honking except for warning, and loud stereo systems. California Vehicle Code §27007 prohibits sound from vehicle audio systems audible 50 feet from the vehicle (a standalone infraction). CVC §27150 requires every motor vehicle to have a muffler in good working order to prevent excessive noise; modified exhaust systems that exceed factory noise levels are illegal under CVC §27151. CVC §27153 prohibits any vehicle from producing excessive or unusual noise. Diesel truck idling over 5 minutes is regulated by CARB statewide (13 CCR §2485) with few exceptions. Richmond Police conduct targeted enforcement around known sideshow and street racing hotspots; sideshows specifically are prohibited under CVC §23109 and can result in vehicle impound. Chronic commercial vehicle idling in residential zones can trigger nuisance enforcement.
Contact your local code enforcement office for specific penalty information.
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