If you will be transporting hazardous materials that require placards, you must: 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 If you will be transporting hazardous materials that require placards, you must: Answers Ask permission of the local law enforcement agency. Obtain a hazardous materials endorsement. Transport at night only. Explanation You must have a hazardous materials endorsement to transport a material that requires placards. This questions appears in the following tests: Alaska Class A Knowledge Test Alaska Class A Knowledge Test Missouri Class A Knowledge Test New Mexico Class B Knowledge Test