Emergency exit
An emergency exit in a building is an exit for emergencies, such as a fire. Emergency exits can be found in a number of places such as buildings, planes, schools, or anywhere else where there may be a large number of people in a small space.
Emergency Exit Media
Emergency exit in Universitetet metro station in Stockholm
A fire escape is a type of emergency exit that is external to a building
American Airlines Boeing 737 overwing emergency exit
MTR Hyundai Rotem EMU train emergency exit in the middle of both heads/ends
Ryanair Boeing 737-800 take off, showing the two overwing emergency evacuation doors