A placard identifying hazardous materials must be placed: Question A placard identifying hazardous materials must be placed: Answers Inside the trailer. Inside the cab. On the outside of the vehicle. Explanation When required, hazardous materials placards must be placed on the front, rear, and both sides of a vehicle. This questions appears in the following tests: Alaska HazMat Idaho HazMat Kentucky HazMat Kentucky HazMat New Mexico HazMat South Dakota HazMat Vermont HazMat Virginia HazMat Wyoming HazMat
