Abstract
In this paper we discuss about jurisdictional area of fire department minimizing welfare loss based on accessibility in transportation network. Our proposed method can support decision making of assignment problem in the real world by using program with the Google map API. In numerical example, we show that the accessibility of each fire department is higer than the average value of accessibility for all town in its jurisdictional areas. From the result of proposed optimization problem, some towns are shown to assign them to other jurisdictional area than a current jurisdictional area.