Vehicle noise in Concord is governed primarily by California Vehicle Code sections that limit exhaust noise, prohibit modified mufflers, and cap amplified sound audible at 50 feet. Concord Police enforce these alongside local ordinance provisions prohibiting revving, racing, and extended idling in residential areas.
Vehicle noise enforcement in Concord combines state Vehicle Code authority with Municipal Code Chapter 82 noise provisions. California Vehicle Code §27150 requires every motor vehicle to have an adequate muffler preventing excessive or unusual noise, and §27151 prohibits muffler modifications that amplify sound beyond original equipment specifications. California Vehicle Code §23130 establishes maximum vehicle pass-by noise standards (generally 80 dBA for passenger vehicles at 50 feet). CVC §27007 prohibits vehicle audio audible 50 feet or more from the vehicle. Locally, Concord prohibits prolonged idling of commercial vehicles in residential zones, street racing, and engine revving that disturbs residents. CHP-certified officers and Concord Police can issue fix-it citations for muffler violations requiring BAR Referee station inspection. Street racing and sideshow activity are enforced aggressively under CVC §23109 and can result in vehicle impound under the city's sideshow prevention ordinance. Diesel truck idling is additionally restricted by CARB's statewide 5-minute idle rule.
Contact your local code enforcement office for specific penalty information.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Concord, CA
Concord enforces the California Vehicle Code 72-hour rule (CVC 22651(k)) citywide, prohibits parking on unpaved surfaces in front yards, and operates permit ...
Concord, CA
Commercial vehicles over 10,000 lbs GVWR are prohibited from overnight parking on residential streets in Concord and cannot be stored on residentially zoned ...
Concord, CA
California Public Resources Code §4291 requires 100 feet of defensible space around structures in State Responsibility Areas and Very High Fire Hazard Severi...
Concord, CA
All fireworks, including "safe and sane" fireworks, are completely banned in Concord. Possession, sale, or use of any consumer fireworks is a misdemeanor pun...
Concord, CA
Concord regulates removal of protected trees under Concord Municipal Code chapter 8.50 (Tree Preservation). Protected trees over 10 inches DBH require a perm...
Concord, CA
Concord water customers served by Contra Costa Water District must follow permanent statewide conservation rules: no runoff, no watering during or 48 hours a...
Side-by-side rule comparisons with other cities in Contra Costa County.
See how other cities in Contra Costa County handle vehicle noise.
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