Question A driver needs a CDL with a hazardous materials endorsement to transport hazardous materials in: Answers A vehicle requiring a Class A license. A vehicle requiring a Class B license. A vehicle requiring a Class C license. Any sized vehicle. Explanation You must have a CDL with a hazardous materials endorsement to operate a vehicle of any size to transport hazardous materials. Take a FREE Practice Test Now This questions appears in the following tests: Alabama HazMat , District Of Columbia HazMat , New York HazMat , North Carolina HazMat , North Dakota HazMat , West Virginia HazMat ,