Question ____ identical placards must be placed on a vehicle transporting hazardous materials. Answers One Two Three Four Explanation When hazardous materials placards are required, they must be placed on all four sides of the transporting vehicle. Take a FREE Practice Test Now This questions appears in the following tests: Nebraska HazMat , New Jersey HazMat , New York HazMat , North Dakota HazMat , Texas HazMat , West Virginia HazMat , Wyoming HazMat ,