Development of a Theoretical Method for Analyzing Urban Traffic Performance: Dynamic Traffic Assignment Approach

2015 Fiscal Year Final Research Report

• Project/Area Number: 26820207
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering project/Traffic engineering
• Research Institution: The University of Tokyo
• Principal Investigator: Wada Kentaro 東京大学, 生産技術研究所, 助教 (20706957)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: MFD / 交通ネットワーク / 動的均衡配分 / スループット / 逆解析 / 交通流 / 渋滞

Outline of Final Research Achievements

This study clarifies the relationship between a Macroscopic Fundamental Diagram (MFD) and congestion patterns on a general networks with one-to-many/many-to-one OD pairs. Specifically, we formulate a new inverse problem of the dynamic user equilibrium assignment problem for a give congestion pattern. The proposed problem is formulated as a system of linear equations; by solving this, we can derive analytical formula of a network throughput consistent with the congestion pattern. Thorough a sensitivity analysis of this formula, we identified the types of congestion patterns that cause the decreasing of a network throughput (i.e., the mechanism of a decreasing branch of MFDs).

Free Research Field

交通工学