2023 Fiscal Year Final Research Report
Simultaneous optimization of the service level and the demand level of urban infrastructures with fiscal constraints
Project/Area Number |
20H01486
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 07040:Economic policy-related
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Research Institution | Tohoku University |
Principal Investigator |
Kono Tatsuhito 東北大学, 情報科学研究科, 教授 (00344713)
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Co-Investigator(Kenkyū-buntansha) |
平松 燈 関西学院大学, 総合政策学部, 教授 (30725255)
毛利 雄一 一般財団法人計量計画研究所, その他部局等, 本部長 (60246692)
中島 賢太郎 一橋大学, 大学院経営管理研究科, 教授 (60507698)
馬奈木 俊介 九州大学, 工学研究院, 教授 (70372456)
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | 都市インフラ / 財源調達 / 税 / 料金 |
Outline of Final Research Achievements |
The optimization of financial resource procurement and maintenance levels for various types of urban infrastructure were conducted. An overview of each is presented below. For airports, flight frequencies and aircraft weights were endogenized to optimize airport fees. For river infrastructure, we maximized social welfare with respect to the financing method and levee maintenance. The results show that the conclusions differ significantly depending on whether households migrate between regions or not. Regarding road pavement policy, we obtained repair data and linked them to traffic volume data from the Road Traffic Census to examine the optimization of repair measures. The results showed that the preventive maintenance measures proposed by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) were not necessarily optimal. For urban railroads, a model analysis of multiple residential areas with heterogeneous commuters was conducted.
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Free Research Field |
都市交通計画,都市経済学,交通経済学
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Academic Significance and Societal Importance of the Research Achievements |
都市インフラの最適水準を財政制約のうえで検討している点に新規性がある.財政制約を考えることで,財政のシャドープライス(MCFとよく略される)が影響するため,従来の研究とは異なる結果が現れる.現実に,財政制約は存在しているため,重要な検討事項である.本研究では,理論的な結論に加えて,シミュレーションによる定量分析を行っている点も特徴である.定量分析では,現実のデータを用いており,現実的にどのような政策が必要なのかの例示になっている.分析の結果,現実の行政が示している政策提案の評価を行うことができている.
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