Seat belts: 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 Seat belts: Answers Should not be worn. Are optional for those holding a CDL. Are required, but only if a driver is transporting hazardous materials. Are required to be used by all drivers. Explanation You must wear a seat belt at all times while operating a CMV. This questions appears in the following tests: Indiana Class B Knowledge Test