Antioch prohibits modified exhaust systems, excessive engine revving, squealing tires, and loud car stereos audible more than 50 feet from the vehicle. California Vehicle Code sections 27150-27151 also apply, with a statewide 95-decibel maximum for vehicle exhaust.
Vehicle noise in Antioch is governed by both local ordinance and state law. California Vehicle Code §27150 requires all motor vehicles to have a muffler in good working order, and §27151 prohibits modifications that amplify or increase exhaust noise beyond factory specifications. As of January 2019, AB 1824 converted exhaust noise violations from correctable 'fix-it' tickets to immediate fines (generally $193+). The statewide maximum for passenger vehicle exhaust is 95 decibels measured at 50 feet (SAE J1492). Antioch Municipal Code Chapter 4-5 adds local prohibitions on excessive idling, loud car audio systems audible more than 50 feet from the vehicle, tire squealing, and racing engines in residential zones. Sideshows and street takeovers carry enhanced penalties under both city and state law, including vehicle impoundment.
Contact your local code enforcement office for specific penalty information.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Antioch, CA
Antioch enforces the statewide 72-hour street parking limit under CA Vehicle Code 22651(k) and Antioch Municipal Code Chapter 4-5. Overnight RV parking, perm...
Antioch, CA
Antioch prohibits parking of commercial vehicles over 10,000 lbs GVWR in residential zones overnight under Antioch Municipal Code and CA Vehicle Code 22507.5...
Antioch, CA
Antioch Municipal Code Chapter 9-5 and property maintenance standards restrict RV, boat, trailer, and oversized vehicle storage in residential zones. Front-y...
Antioch, CA
Open burning is prohibited in Antioch under Bay Area Air Quality Management District (BAAQMD) regulations. Burning of yard waste, trash, and debris is not al...
Antioch, CA
Antioch is one of the few Contra Costa County cities that ALLOWS the sale and use of State Fire Marshal-approved Safe and Sane fireworks from July 1 through ...
Antioch, CA
Fire pits in Antioch must be contained in approved devices with proper clearance from structures. Wood-burning fire pits are prohibited on Spare the Air days...
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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