The identification number associated with a hazardous material should appear: Question The identification number associated with a hazardous material should appear: Answers On the material's packaging. On the vehicle's license plate. Directly next to a placard. On a bumper sticker on the vehicle. Explanation A material's ID number must appear on its accompanying shipping paper as well as on its packaging. It must also appear on cargo tanks and other bulk packaging. This questions appears in the following tests: California HazMat Colorado HazMat Georgia HazMat Illinois HazMat Indiana HazMat Kansas HazMat Montana HazMat Nebraska HazMat Pennsylvania Tank South Dakota HazMat Texas HazMat