This sign means: 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 This sign means: Answers One-way traffic. Two-way left turn. Two-way traffic. Minimum speed limit. Explanation Regulation signs regulate traffic speed and movement, displaying rules which drivers must obey. This sign tells drivers the direction in which they must drive when turning onto a one-way street.