Emergency roof hatches on a bus: 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 Emergency roof hatches on a bus: Answers Must be closed before the bus is driven. Can be opened to allow for air movement during a drive. Must be removed before the bus is driven. Explanation On a bus, it is permissible to lock some emergency roof hatches in an open position to allow in fresh air. However, this should not be a regular practice. This questions appears in the following tests: California Passenger Kentucky Passenger Michigan Bus Minnesota Bus Vermont Passenger