By now, if your business is in California, your fleet of medium duty diesel trucks should meet the CARB (California Air Resources Board) regulations. As of January 1st, 2020, if you truck is between 14,001 to 26,000 lbs GVWR and 2004 and older, you may be out of compliance. Lighter Vehicles (14,001 – 26,000 lbs…

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