Empirical Observations of Congestion Propagation and Dynamic Partitioning with Probe Data for Large-Scale Systems
Research on congestion propagation in large urban networks has been based mainly on microsimulations of link-level traffic dynamics. However, both the unpredictability of travel behavior and the complexity of accurate physical modeling present challenges, and simulation results may be time-consuming and unrealistic. This paper explores empirical data from large-scale urban networks to identify hidden information in the process of congestion formation. Specifically, the spatiotemporal relation of congested links is studied, congestion propagation is observed from a macroscopic perspective, and critical congestion regimes are identified to aid in the design of peripheral control strategies. To achieve these goals, the maximum connected component of congested links is used to capture congestion propagation in the city. A data set of 20,000 taxis with global positioning system (GPS) data from Shenzhen, China, is used. Empirical macroscopic fundamental diagrams of congested regions observed during propagation are presented, and the critical congestion regimes are quantified. The findings show that the proposed methodology can effectively distinguish congestion pockets from the rest of the network and efficiently track congestion evolution in linear time O(n).
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- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309295079
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Authors:
- Ji, Yuxuan
- Luo, Jun
- Geroliminis, Nikolas
- Publication Date: 2014
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 1–11
- Monograph Title: Traffic Flow Theory and Characteristics 2014, Volume 2
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Issue Number: 2422
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Macroscopic traffic flow; Methodology; Network analysis (Planning); Traffic congestion; Traffic data; Traffic distribution; Traffic flow theory
- Geographic Terms: Shenzhen (China)
- Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; I71: Traffic Theory; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 01518269
- Record Type: Publication
- ISBN: 9780309295079
- Report/Paper Numbers: 14-0816
- Files: TRIS, TRB, ATRI
- Created Date: Mar 14 2014 9:25AM