Under what circumstance may you drive with an emergency exit door open?

Driving with an emergency exit door open is considered unsafe, as it poses significant risks to both the driver and passengers. Keeping the emergency exit door closed while the bus is in motion is crucial for maintaining safety and ensuring that the integrity of the vehicle is upheld during transit. The potential for accidents increases if the door is open, as it could lead to passengers being injured due to a fall or objects being thrown from the vehicle.

While there may be scenarios where the cabin temperature could become uncomfortable or where short movements are involved, none of these situations justify the risk posed by an open emergency exit door during operation. Thus, the safest and most responsible action is to ensure that all emergency exits are properly secured when the vehicle is in motion.