Estimaton of Travel Speed of Emergency Response Vehicles after the Earthquake in Tokyo Metropolis

Abstract

After the great earthquake in Tokyo Metropolis, a lot of vehicles and pedestrians are expected on the road network because of the disruption of public transportation. Since the traffic is heavy, it will be difficult for emergency response vehicles to work efficiently. The objective of this study is to estimate the decrease of travel speed of emergency response vehicles after the great earthquake in Tokyo Metropolis comparing with that of general vehicles. To achieve the objective, the probe data derived from taxis and the records of emergency activities by Tokyo Gas Co., Ltd. are employed. The estimations of travel speed are implemented with respect to road types and local meshed units.