If the open area is over 60m2, then the minimum lighting level on the ground must be no less than 0.5 lux in an emergency. In open areas that are less than 60m2, emergency lighting is not required. However, people may be unfamiliar with their surroundings, so emergency lighting should always be taken into consideration.
Exit doors for the emergency escape route must have signs or an emergency bulkhead light. In an emergency, occupants may panic, but strategically placed emergency lighting could reduce the likelihood of panic, providing appropriate visual direction, by enabling safe movement of occupants towards escape routes.
