Abstract
I want to pick “JR Kokubunji” station up as one example in the form called the station with a bridge which has been increasing recently. Kokubunji station is the one which is often crowded with people and it is easy to slip when it rains. The potensial reason is “Terrazo” which is material of flooring. Moreover, people can pass the station precient, so it cause more danger. Therefore, I want to consider how we can gain safety and suggest the meaning to have the higher safe that is the appropriate form of the station with a bridge.