To limit the probability of delays in the evacuation or movement of persons to a safe place in the event that one egress route becomes obstructed or inaccessible in an emergency, which could lead to harm to persons.
To limit the probability that emergency responders will be delayed or ineffective in carrying out their emergency response operations in the event that one egress route becomes obstructed or inaccessible, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.