Impact of Drivers Skipping a Gap on the Capacity of Unsignalized Intersections

The gap acceptance method commonly used for the analysis of unsignalized intersections assumes that minor stream drivers accept every gap greater than the critical gap. However, in some circumstances a driver might skip a gap because the next gap in the major stream is very large and allows a more comfortable maneuver. The possible impact of such behavior on the intersection capacity is analyzed in this paper. Based on an assumed model for the driver's behavior, it is found that the entry capacity is reduced by up to 6%. On the other hand, gap skipping also has an impact on the empirical estimation of the critical acceptance gap. It is shown that both effects tend to balance out at moderate major stream flows.

• 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:
  • Geistefeldt, Justin
  • Troutbeck, Rod J
• 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 597-605
• Monograph Title: Proceedings of the 5th International Symposium on Highway Capacity and Quality of Service. Volume 2 - Technical Papers

Subject/Index Terms

• TRT Terms: Behavior; Drivers; Gap acceptance; Unsignalized intersections
• Uncontrolled Terms: Critical gaps (Traffic); Intersection capacity
• Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 01035857
• Record Type: Publication
• ISBN: 4905990610 C3051
• Files: TRIS
• Created Date: Oct 23 2006 2:15PM