Placards are: Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Placards are: Answers Not needed if a driver feels there is no need to display them. Only required on the front of a vehicle. Required when transporting hazardous materials. Explanation In general, vehicles carrying hazardous materials are required to display diamond-shaped warning signs on all four sides. These warning signs are called "placards." This questions appears in the following tests: Virginia HazMat
