WAITING TO CROSS A MAJOR STREAM AT AN UNCONTROLLED ROAD JUNCTION

An analytical model is suggested which estimates the statistics of delay to drivers who arrive randomly at an uncontrolled junction and wait to cross a major stream. The complexity of the problem does not allow all the details of the real crossing process to be taken into account in the model. Some simplifying assumptions are therefore made in the analysis concerning the probability distribution of the first "gap" encountered by the waiting driver and the independence between certain distributions. Using thorough simulation, the effects of these assumptions on the estimated average delay have been investigated in the case of a cumulative Erlang distribution for the gap acceptance function, an Erlang distribution for the move-up time, and a gamma distribution for the major stream headways. The mean delay estimated by the analytical model was always well within 5 per cent of the value obtained by simulation, and the two values were usually almost equal. These results support the simplifying assumptions of the analytical model and suggest that it gives a satisfactory estimate of delay. For the covering abstract of the symposium see TRIS 452544. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0802024610
• Supplemental Notes:
  • Proceedings of the Eighth International Symposium on Transportation and Traffic Theory, Toronto, Canada, June 24-26, 1981.
• Corporate Authors:

  Toronto University Press

  Front Campus
  Toronto, Ontario  Canada  M5S 1A6

  Toronto University Press

  33 East Tupper Street
  Buffalo, NY  United States  14208
• Authors:
  • Hurdle, V F
  • Hauser, E
  • Golias, J C
• Conference:
  • Proceedings of the Eighth International Symposium on Transportation and Traffic Theory, Toronto, Canada, June 24-26, 1981.
• Publication Date: 1983

Media Info

• Features: Figures; References;
• Pagination: p. 292-230

Subject/Index Terms

• TRT Terms: Arterial highways; Conferences; Decision making; Driving; Gap acceptance; Intersections; Mathematical models; Physical distribution; Probability; Simulation; Traffic delays; Traffic flow; Traffic simulation; Unsignalized intersections; Vehicle spacing; Waiting time
• ITRD Terms: 8525: Conference; 2248: Decision process; 9010: Delay; 9016: Distribution (gen); 1855: Driving (veh); 455: Junction; 2748: Main road; 6473: Mathematical model; 6534: Probability; 9103: Simulation; 671: Traffic flow; 694: Vehicle spacing; 9100: Waiting time
• Subject Areas: Data and Information Technology; Freight Transportation; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00452558
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0 8020 2461 0
• Files: ITRD, TRIS
• Created Date: Jul 31 1986 12:00AM