Abstract
Because there are underground stations and underground commercial facilities in the Osaka city, we need to develop measures against disasters such as Tsunami. When flooding hits the underground shopping malls, visitors may have troubles with evacuations for taking the quickest route; for instance, there are queues at the stairs. The purpose of this study is to clarify the evacuation behaviors, by conducting the survey which visitors evacuate from the underground shopping mall on foot, in order to contribute to quick evacuations. The findings of this study are as follows; many visitors choose the same buildings for evacuation and choose the nearby first choice building, as the second choice, if they cannot enter the first choice; many visitors cause congestions at the stairs; visitors who choose only underground routes for evacuation takes longer time and distance in completing their evacuations than visitors who choose both ground and underground routes.
