RESEARCH ON THE ACTUAL CONDITIONS AND PROBLEMS OF UNDERGROUND PASSAGES DEVELOPED BY PRIVATE URBAN DEVELOPMENTS

Abstract

 In recent years, there are many underground passages developed by private sectors in urban development. But actual situations and problems of planning, maintenance, and management are not clear. The purpose of this study is to work on the improvement of underground passages through future private development in Tokyo by conducting surveys and interviews, and sorting out their situations and issues. It shows that underground passages of private sectors and transferred to railway company or road manager are important for formation of pedestrian networks. But there are issues; public nature of the plan is not sufficiently considered in the adjustment of road occupancy, discussions at the development stage take time, it is difficult to maintain facilities with more than the minimum traffic function, it is difficult to set up revenue facilities to cover management costs. It became clear that the system at the planning stage and the system at the maintenance and management stage should be operated in coordination.