While driving, you may: 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 While driving, you may: Answers Use a hand-held cell phone for a call. Send text messages. Not hold a phone to make a voice call. Explanation While operating a CMV, holding a cell phone to make a voice call is prohibited. Drivers may not send or read text messages while operating a CMV.