Are Emergency Egress Signs Strong Enough to Overlap the Influence of the Environmental Variables?

Abstract

This paper aims to explore the strength of environmental variables (i.e., corridor width and brightness), in directing people to indoor locations during emergency situations. The existence of contradictory information was manipulated by inserting posted signs pointing to the opposite direction to the one suggested by the environmental variables. A Virtual Reality-based methodology was used to collect participants’ directional choices. Sixty-four participants had to find a specific room as quickly as possible in a virtual hotel in which they navigated through 12 corridor intersections (two-forced-choices). Two experimental conditions were considered (i.e., Signs and No-signs conditions) according to the exit signs availability. Results indicated that for the first decision point in an emergency situation with signs, 65.6% of the participants preferred to follow the wider corridor instead of the exit sign direction. Percentages of choices favoring the path opposite to that posted by the sign decreased along the escape route suggesting that with the repeated exposure to an exit sign people increased their compliance with it.