In Tokyo, recently, rapid urban developments around railway stations in the city centre have been causing serious overcrowding at stations. However, there is almost no research to solve this problem. Therefore, this study tries to study toward solutions for preventing the overcrowding at stations caused by urban development in the city centre. Concretely, (1) it identifies causes of the overcrowding at city centre stations. (2) We study the consistency between the scale of the urban development and the station facility. (3) Keeping this (2) in mind, we suggested what should be improved institutionally to prevent serious overcrowding at stations.

This paper evaluates the effect of introducing On-Demand Transportation (ODT) System developed by the university of Tokyo as a series of DRT (Demand Responsive Transport) on the local community. This study is based on the social network analysis using both ODT log data and questionnaire/interview. Social networks are extracted from ODT log data and the candidates for questionnaire/interview are chosen from networks. The combination of ODT log data and questionnaire/interview made it efficient to study the ties on the networks in sociological studies. This study revealed that many old people made new friends by using ODT in Tamaki Town.

Recently, despite on overall decline in the automobile traffic fatalities, a number of serious traffic accidents caused by commercial vehicles such as bus or truck have been occurring. Problems such as labor circumstances or the subcontract structure of the vehicle driver are pointed out in the background. This paper focuses on how the multiple subcontracting structures affect the safe driving. In addition, we aim to obtain suggestions for the improvement of the multiple subcontractors by comparing with South Korean trucking industry, which has similarity with Japan to a certain extent.