The application possibility of the relation of the road distance to the straight line distance to the facility location planning

-Case of heliports at Toyota City, Aichi, Japan-

Abstract

The distance is one of the important indexes to make facility location plan. Our study aims to discuss how to consider the ratio of the road distance to the straight line distance for the index of facility location planning. By measuring the distance between the emergency landing field for a helicopter and the target point in Toyota City, there is an acceptable error range to evaluate the transport time by measuring the straight line distance. On the other hand, the ratio of the road distance to the straight line distance tend to have small coefficient of determination in case that the target point set the signalized intersection in rural area. In such a case, the distance by the road network analysis should be applied.