Impact of Earthquake Risk on the Nationwide Transportation Network and Traffic Flows

Abstract

In the present transportation network without enough substitute routes, not only local but nationwide traffic is highly influenced when a part of the network is damaged. For the purpose of evaluating the function of the nationwide network damaged by earthquakes, the author built a model to assess traffic flow considering the risk of earthquakes around Japan and suggested indices to evaluate the transportation network. The simulation using this model made influences in damaged networks clear, that is, the traffic flow of each link increases or decreases depending on its location with respect to damaged areas.