Regional Planning in Yamaguchi Prefecture

The level of service in a city can be estimated by the number of urban facilities which the people want to use. They are able to use urban facilities which are in their own city and in neighbor cities by use of road network. Both urban facilities and road network should be considered in the regional planning. In this paper, urban facilities which supply the service of high quality are selected. Considering the use of road network, the number of facilities where the people can arrive by car within 30 or 60 minutes are calculated. The level of service in each city is expressed by the first principal component scores. Those cities in Yamaguchi prefecture are furthermore classified by cluster analysis. City and inter-city road network planning are discussed.