California Code of Regulations Title 13 §2485 caps heavy-duty diesel idling at five minutes statewide, enforced across LA County by CARB and SCAQMD Rule 1102. LA County's fleet idle-reduction policy adds matching limits for county-owned trucks and buses.
13 CCR §2485 prohibits diesel-fueled commercial vehicles over 10,000 pounds from idling more than five minutes anywhere in California, while §2480 forbids school buses from idling within 100 feet of schools or while loading. South Coast AQMD Rule 1102 applies the same five-minute cap to refuse-collection and tour-bus operators across the LA basin. LA County Internal Services adopted a fleet idle-reduction policy mirroring those standards for county-operated vehicles. Enforcement against private operators in unincorporated areas is led by CARB and AQMD inspectors, with LA County Sheriff supporting at warehouses, transfer stations, and ports adjacent to Long Beach where freight idle hot-spots cluster.
CARB issues civil penalties starting at $300 and rising to $1,000 per day per vehicle. AQMD adds Rule 1102 fines reaching $25,000 for repeat industrial violators. Habitual operators face Notice of Violation hearings.
Castaic, CA
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Castaic, CA
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Los Angeles County, CA
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Los Angeles County, CA
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle vehicle idling restrictions.
See how Castaic's vehicle idling restrictions rules stack up against other locations.
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