What does a "Z" restriction on a license mean? 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 What does a "Z" restriction on a license mean? Answers The drive test was taken on a motor scooter or three-wheeled motorcycle. The drive test was taken on a two-wheeled motorcycle. The drive test results are unofficial. Explanation A "Z" restriction on a person's license means that they used a motor scooter or three-wheeled motorcycle for the drive test.