Combination with a Gross Combined Weight Rating in excess of 26,000 lbs. with a trailer which has a Gross Vehicle Weight Rating in excess of 10,000 lbs = Class A

Single vehicle with a Gross Vehicle Weight Rating in excess of 26,000 lbs. or any such vehicle towing a trailer with a Gross Vehicle Weight Rating of 10,000 lbs. or less = Class B

Single vehicle with a Gross Vehicle Weight Rating of 26,000 lbs. or less or any such vehicle towing a trailer with a Gross Vehicle Weight Rating of 10,000 lbs. or less when it brings the Gross Combined Weight Rating up to an excess of 26,000 lbs. or any such vehicle towing a trailer of any weight rating which does not bring the Gross Combined Weight Rating in excess of 26,000 lbs. does not require a CDL, unless it's hauling a quantity of hazardous materials which requires placards to be displayed, in which case, a Class C CDL with hazmat endorsement would be required.

For a state which has a non-CDL A, B, and C license system, the weight requirements are the same as they are for the equivalent CDL classes, which are:

• Class A: Gross Combination Weight of more than 26,000 lbs., in which the Gross Vehicle Weight Rating of the vehicle in tow is in excess of 26,000 lbs.
• Class B: Single vehicles with a Gross Vehicle Weight Rating in excess of 26,000 lbs., and combination vehicles with a Gross Combination Weight Rating in excess of 26,000 lbs., so long as the vehicle in tow does not have a Gross Vehicle Weight Rating in excess of 10,000 lbs.
• Class C: Single vehicles and combinations with a Gross Vehicle Weight Rating/Gross Combination Weight Rating of 26,000 lbs. or less.