Doors should be closed while a school bus is being driven, except when: Question Doors should be closed while a school bus is being driven, except when: Answers Crossing railroad tracks. Needing to cool off the inside of the vehicle. There is no vehicle next to the bus. Explanation The doors of a school bus must be kept closed any time the bus is moving, except when it is crossing railroad tracks. This questions appears in the following tests: Maine Bus Missouri Bus Ohio Bus Vermont Bus Virginia Bus Washington Bus
