Class A CDL is a Commercial Driver’s License that allows you to drive any combination vehicle in access of 26,000 pounds. A combination vehicle is a vehicle that has a pulling unit and a trailer or trailers (driver must have appropriate endorsements). Class A CDL is the highest category of a driver’s license and allows the holder to operate smaller vehicles (class B or class C). No matter which technical diploma you choose to work toward, a CDL will give you career options!