Heavy-duty diesel trucks operating in Stockton, including at the Port and warehousing zones, must follow the California Air Resources Board five-minute idling rule under Title 13 California Code of Regulations Section 2485.
California prohibits commercial diesel-fueled vehicles over 10,000 pounds gross weight from idling more than five minutes in any location, with limited exemptions for queueing, sleeper berths in designated zones, and emergency operations. Stockton enforcement is supported by SJVAPCD inspectors and CHP, with the Port of Stockton operating drayage zones and signage. Violations are a particular concern near schools, residential areas adjacent to industrial corridors, and the Crosstown Freeway.
Idling violations carry CARB minimum penalties of $300 per occurrence, escalating for repeat offenders, with possible referral to CARB and SJVAPCD enforcement.
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