The Federal Motor Carrier Safety Administration requires a commercial driver's license for operating a logging truck in all states in the United States. The CDL is further broken down into multiple classes, with endorsements and additional testing also included.
The primary determinant in acquiring a specific class of the CDL, as of March 2015, is usually the weight rating of the vehicle and trailer. A combined weight rating of 26,001 pounds or more garners a Class A CDL as well as if the amount on the trailer is in excess of 10,000 pounds. Other ratings, such as Class B or Class C, still follow the weight rating model but also include specifications for school buses or transportation of hazardous materials. Each state has slightly different specifications for each CDL class, though the weight rating model is universally accepted.