Vehicle Code 27150 and 23130 govern modified exhaust and loud vehicles countywide. Sacramento County CHP and Sheriff issue fix-it tickets; sustained loud idling over 5 minutes is also a County nuisance.
California Vehicle Code 27150 requires all motor vehicles to have an adequate muffler preventing excessive or unusual noise. CVC 23130 sets specific dBA limits (80 to 95 dBA depending on speed and weight class). In unincorporated Sacramento County, Sheriff deputies and CHP officers are the primary enforcers, and modified-exhaust citations are common on corridors like Jackson Highway, Grant Line Road, and Twin Cities Road. The County Code also treats extended commercial truck idling over 5 minutes as a nuisance, consistent with CARB anti-idling regulations.
Fix-it ticket around 200 dollars plus referee certification; idling fines 100 dollars and up.
See how other cities in Sacramento County handle vehicle noise.
See how Sacramento's vehicle noise rules stack up against other locations.
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