Emergency exit doors should open outward, fall outward, etc, otherwise people rushing to get out could pile up and get stuck. True in buildings as well as vehic

Emergency exit doors should open outward, fall outward, etc, otherwise people rushing to get out could pile up and get stuck. True in buildings as well as vehicles. Some Airbus models have a similar upward hinge on at least some exits, I think on many the door fully detaches and you're supposed to chuck it out of the way.