Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management)
Online ISSN : 2185-6540
ISSN-L : 2185-6540
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Paper (In Japanese)
  • Toshimori OTAZAWA, Katsuhiko MOROHASHI, Shodai YOKOYAMA
    2021 Volume 77 Issue 2 Pages 52-61
    Published: 2021
    Released: April 20, 2021
    JOURNALS RESTRICTED ACCESS

     We study the impact of highways on the geography of regional employment and establishments. To identify the causal effect and its spatial scope, we have relied on geographical random sampling, propensity score matching and difference-in-difference estimator. Using the data of highway interchanges which were put into service between 1996 and 2014 in Japan, we estimate the impact of the openings of highway interchanges on the density of employment and establishments in the surrounding area by distance bands and by industries. The results show that new highway interchanges increase regional total employment by 3.4% and that the effect appears within 4km. We also show the robustness of the proposed method by comparing with the alternative conventional method.

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Technical Report (In Japanese)
  • Akane KATAYAMA, Masahiko KIKUCHI, Hiroki SHIMIZU, Mamoru TANIGUCHI
    2021 Volume 77 Issue 2 Pages 42-51
    Published: 2021
    Released: April 20, 2021
    JOURNALS RESTRICTED ACCESS

     Various evaluations have been made in the field of administrative planning to assess financial constraints imposed by population decline, but the actual situation has not been fully elucidated. For this study, we categorize changes and evaluation contents of evaluations performed in the planning field for urban planning administration. Furthermore, we clarify the characteristics and present basic information for future evaluations. From analyzing laws, plans, operation guidelines, and other documents related to city planning administration, evaluation efforts were categorized into three types: a) evaluation of partial plans, b) evaluation of plans in a project area, and c) comprehensive evaluation of plans. Results clarified that the evaluation contents were integrated, the target areas were expanded, and the evaluation periods were lengthened in the order of a), b), and c).

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