Answer: Emergency escape route or an emergency exit.
Explanation: An emergency exit is a backup exit which people can take as a form of safety should there be a dangerous situation or emergency such as fire outbreak, in order to lessen, prevent or avert injuries or casualties.
Conditions of an Emergency escape route or exit
• It must be a location that is easily accessible.
• It must lead to a safe place outside the building.
• The control must be inside the building.
• The location must be a permanent one and must be well managed.
• An emergency escape route must be at least 1 meters wide.