Evaluation of building line regulation operated by police and narrow road plan in dense residential area in Tokyo

Research Project

Project/Area Number	26420617
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Town planning/Architectural planning
Research Institution	Shibaura Institute of Technology
Principal Investigator	KUWATA Hitoshi 芝浦工業大学, 建築学部, 教授 (50276458)
Co-Investigator(Kenkyū-buntansha)	加藤仁美東海大学, 工学部, 教授 (00152736)
Project Period (FY)	2014-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000) Fiscal Year 2016: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000) Fiscal Year 2015: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000) Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords	建築線 / 細道路網 / 2項道路 / 43条但書 / 狭隘道路拡幅助成 / 建築審査会 / 特定行政庁 / 狭隘道路 / 細道路網計画図 / 土地区画整理事業 / 耕地整理事業 / 細街路 / 市街地形成 / 東京都
Outline of Final Research Achievements	In this research, we focused on the Tokyo Metropolitan Suginami Ward, which still has a region with a vulnerable road network and we evaluate the situation of the road network that has been planned so far using a designation map of building line regulation operated by police, the Tokyo city planning narrow street network map of 1933, and the map for reconsideration of road network in 1961. In addition, we conduct a questionnaire survey to specific administrative agencies to grasp the realities and problems of narrow street treatment in practice. As a result, we clarified the fact that the narrow road network was almost abolished in 1961 affected the formation of the poor road network, especially in the north - south direction in Suginami Ward, and the specific administrative agencies still have a problem to improve narrow roads problem.