Not using a safety belt while driving: 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 Not using a safety belt while driving: Answers Is encouraged. Is optional. Is illegal. Explanation You must always wear a safety belt while operating a commercial motor vehicle. Driving a CMV without being properly restrained by a safety belt is both illegal and dangerous. This questions appears in the following tests: Washington Class B Knowledge Test