You may travel with open emergency exit doors or windows: 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 You may travel with open emergency exit doors or windows: Answers To allow fresh air to enter the bus. If passengers know the exits are open. Under no circumstances. Only during the summer. Explanation Never drive with an open emergency exit door or window. The “Emergency Exit” sign on an emergency door must always be clearly visible and identifiable.