Sensitivity of Traffic Conditions at Road Junctions to Movement-Specific Flows of Approaching Vehicles

The design of road junctions is one of the most important tools of traffic management, which includes the management of demand for movement. The use of junction design in demand management can be usefully informed by analysis of the effect of changing the flow of traffic making each particular movement through a junction upon the conditions encountered by this traffic and by the traffic making each of the other possible movements through the same junction. Existing analysis of this kind is brought together here and extended to cover vehicular traffic at signal-controlled junctions, roundabouts and priority junctions in a unified way. The starting point is the identification of traffic movements and how they combine to form separately queueing streams. The sensitivity of the capacity of each stream to the arrival rate in each movement is then analyzed. For signal-controlled junctions where signal timings are optimized these sensitivities can be derived readily from the results of the optimization. For roundabouts and priority junctions, simultaneous linear equations for the sensitivities are constructed by identifying heuristically in which streams the arrival rate exceeds the prevailing capacity. Using these sensitivities, the effects on conditions encountered by traffic in each stream follow from standard approximate expressions for time-dependent amounts of traffic queueing and delay incurred.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780080450926
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier.
• Corporate Authors:

  Elsevier

  Linacre House, Jordan Hill
  Oxford,   United Kingdom  OX2 8DP
• Authors:
  • Allsop, Richard E
• Conference:
  • 4th IMA International Conference on Mathematics in Transport
  • Location: London , United Kingdom
  • Date: 2005-9-7 to 2005-9-9
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Edition: First
• Features: Figures; References;
• Pagination: pp 1-12
• Monograph Title: Mathematics in Transport. Selected Proceedings of the 4th IMA International Conference on Mathematics in Transport

Subject/Index Terms

• TRT Terms: Demand; Highway capacity; Highway traffic control; Intersections; Mobility; Roundabouts; Sensitivity analysis; Signalized intersections; Traffic flow; Traffic queuing; Traffic signal timing
• Uncontrolled Terms: Vehicle movements
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01081097
• Record Type: Publication
• ISBN: 9780080450926
• Files: TRIS
• Created Date: Nov 26 2007 9:54AM