Question An improperly placarded vehicle: Answers Can never be moved. Can only be moved in an emergency. Can be driven short distances. Can be driven if it does not contain radioactive materials. Explanation A vehicle carrying hazardous materials must be appropriately placarded to be driven. An improperly placarded vehicle may only be driven if necessary to protect life or property in an emergency. This questions appears in the following tests: Alabama HazMat Arkansas HazMat Colorado HazMat Delaware HazMat Maryland HazMat New Hampshire HazMat New Jersey HazMat New Jersey HazMat New York HazMat South Dakota HazMat Texas HazMat