A hazmat CDL driver is a transportation specialist with a commercial driver’s license (CDL) hazmat endorsement who is in charge of transporting hazardous liquids, solids, and gases in a tractor-trailer truck by road. As a hazmat CDL driver, your responsibilities and duties include keeping excellent records, conducting safety checks, loading and unloading whatever material you are hauling, and upholding all safety practices and standards. Hazmat drivers may travel short distances, making multiple deliveries, like many gasoline and propane transport drivers. Others drive long hauls to deliver their cargo, which may require them to be away from home for many nights.