Identification of Capacity Balls and Analysis of Affectors of Capacity on Tokyo Metropolitan Expressway

In the speed–flow relationship at a bottleneck, it has conventionally been recognized that the congested-flow region and the free-flow region appear on a parabolic curve. However, there should be no congested-flow region at a "true" bottleneck; aggregated data would gather as a prolate ellipsoid cluster around critical speed. Numerous data were examined at the two well-known bottlenecks on Tokyo metropolitan expressway. Researchers demonstrated that the true bottlenecks exist downstream of the points currently recognized as the bottlenecks and identified the "capacity balls." The shapes of the capacity balls are prolate elliptic, which means the traffic capacity widely ranges at the bottlenecks. Three factors for fluctuation were identified and then quantitatively analyzed in this study.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/4905990610C3051
• Corporate Authors:

  Japan Society of Traffic Engineers

  3-3-1, Kasumigaseki, Minato-ku
  Tokyo 100-0013,   Japan 
• Authors:
  • Watanabe, Kenji
  • Akahane, Hirokazu
  • Warita, Hiroshi
  • Okamura, Hiroaki
• Conference:
  • 5th International Symposium on Highway Capacity and Quality of Service
  • Location: Yokohama , Japan
  • Date: 2006-7-25 to 2006-7-29
• Publication Date: 2006-7

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 269-278
• Monograph Title: Proceedings of the 5th International Symposium on Highway Capacity and Quality of Service. Volume 2 - Technical Papers

Subject/Index Terms

• TRT Terms: Bottlenecks; Highway capacity
• Identifier Terms: Tokyo Expressway
• Uncontrolled Terms: Congested flow; Free flow (Traffic); Speed flow relationships
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning; I73: Traffic Control;

Filing Info

• Accession Number: 01035837
• Record Type: Publication
• ISBN: 4905990610 C3051
• Files: TRIS
• Created Date: Oct 23 2006 2:15PM