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Training Course: Clean Truck Check (HD I/M) Program

MS510: CARB Smog Check for Heavy Trucks - The Heavy- Duty Inspection and Maintenance (HD I/M) Program

Do you own, operate, or dispatch heavy-duty trucks in or to California? Then you need to know about the California Air Resources Board's (CARB) upcoming requirement to regularly test the emission control system of nearly every truck operating within California, regardless of where the tucks owner lives or where the truck is based.

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