Commercial license classes — Arizona Permit Test

Commercial license classes on the Arizona permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.

The rules

A Class B commercial license covers any single vehicle with a GVWR of 26,001 pounds or more.

A heavy truck takes far longer to stop and turn than a car. Its weight is what puts it in a commercial class.

Class B: Any single vehicle with a GVWR of 26,001 lbs. or more, or any such vehicle towing a vehicle not in excess of 10,000 lbs. GVWR.

Arizona Driver License Manual and Customer Service Guide, p.15

A Class A commercial license covers a combination of vehicles with a GCWR of 26,001 pounds or more, where the vehicle being towed is over 10,000 pounds GVWR.

A tractor-trailer can jackknife or swing its trailer into the next lane. Towing that much weight takes the top class.

Class A: Any combination of vehicles with a gross combination weight rating (GCWR) of 26,001 or more pounds, provided the GVWR of the vehicle(s) being towed is in excess of 10,000 lbs.

Arizona Driver License Manual and Customer Service Guide, p.15

A Class C commercial license covers a vehicle that is not Class A or B but is designed to carry 16 or more passengers including the driver, or carries hazardous materials needing placards.

A van full of people or a load of fuel can do great harm in a crash. Size alone does not decide the risk.

Class C: Any single vehicle, or combination of vehicles, that meets neither the definition of Group A nor that of Group B, but is designed to transport 16 or more passengers including the driver, or is used in the transportation of hazardous materials requiring placarding.

Arizona Driver License Manual and Customer Service Guide, p.15

On the test

A Class B license covers a single vehicle weighing at least how much (GVWR)?

26,001 lbs.. A heavy truck takes far longer to stop and turn than a car. Its weight is what puts it in a commercial class. Arizona Driver License Manual and Customer Service Guide, p.15: “Class B: Any single vehicle with a GVWR of 26,001 lbs. or more, or any such vehicle towing a vehicle not in excess of 10,000 lbs. GVWR.”

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Where these come from

Every rule here is checked against Arizona Driver License Manual and Customer Service Guide, published by the Arizona Department of Transportation, and against the state code itself. Last checked 2026-09-28.