California's statewide diesel-truck idling rule limits idling to five minutes for vehicles over 10,000 pounds, enforced in Sacramento by SMAQMD and CHP. The rule reduces neighborhood diesel exhaust near schools, warehouses, and the Port of Sacramento.
Title 13 California Code of Regulations §2485 (the Airborne Toxic Control Measure for in-use diesel-fueled commercial motor vehicles) prohibits idling more than five minutes within 100 feet of restricted areas including schools and homes. Sacramento Metropolitan Air Quality Management District (SMAQMD) enforces locally, working with SacPD and CHP. School zones and warehouse-heavy neighborhoods such as North Sacramento and the Power Inn corridor see active enforcement. Operators must train drivers and post idling-limit notices in cabs of covered fleet vehicles.
First-offense fines start at $300 per vehicle and rise to $1,000+ per day for repeat or willful violations. Fleet operators may face additional CARB penalties and contract suspension on public-agency work.
Sacramento, CA
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See how Sacramento's vehicle idling restrictions rules stack up against other locations.
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