California restricts heavy-duty diesel vehicle idling to five minutes statewide, enforced in Riverside County by CHP, sheriff, and South Coast and Mojave Desert air districts, with heightened focus near schools.
Under Title 13 CCR Section 2485, drivers of diesel-fueled commercial motor vehicles over 10,000 pounds may not idle more than five minutes at any location, including warehouses, distribution hubs, and the Coachella Valley logistics corridor. Idling within 100 feet of a school or restricted area is prohibited at all times. Riverside County coordinates enforcement with CARB, South Coast AQMD, and Mojave Desert AQMD. Truck staging at March Inland Port and warehouse zones receives focused enforcement under the Inland Empire goods-movement program.
First citations start at 300 dollars and rise above 1,000 dollars for repeat offenses; school-zone idling can also trigger CARB administrative penalties.
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Side-by-side rule comparisons with other cities in Riverside County.
See how Palm Springs's vehicle idling restrictions rules stack up against other locations.
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