Any vehicle for which a CDL licence is required, is considered a Commercial Motor Vehicle (CMV).  I encounter a lot of questions about what trucks require a CDL to drive, and which CDL classification is needed.  There is absolutely tons of information mixed in with misinformed individuals and clouded by CDL laws from the past! It seems like the only people who know the rules are the ones busting you for breaking them right there on the spot!  It is my understanding that ANY vehicle that has a GVWR (Gross Vehicle Weight Rating) or GCWR (Gross Combined Weight Rating) of 26,000 Lbs or less, assuming the tow vehicle is not in excess of 10,000 Lbs, does not require a CDL. Even if it has air brakes.  Now some states might have there own rules that trump the federal laws, so always check with your state first. I discovered a website called, that has a lot of valuable information. Check it out! –Roman Carson