SITE EVALUATION OF A ZEBRA CROSSING SIMULATION MODEL

A simulation model of a zebra crossing, based on the assumption that road users obey highway code rules and that both pedestrian and vehicle inter arrival times could be represented by negative exponential distributions, is described, and computed delays compared with the results of a study of activities at three zebra crossing sites. An analysis of the data recorded shows that pedestrians arrive in groups and that the simulation program based on a negative exponential distribution overestimates vehicle delays. The use of actual pedestrian inter arrival times in delays. The use of actual pedestrian inter arrival times in the model produces vehicle delays much closer to observed values. A method of generating group pedestrian arrivals is suggested. A more sophisticated model, in which it is assumed that 50% of pedestrians cross immediately on arrival while the other 50% require a gap of at least 2 seconds in vehicle arrivals on the near side, gives results which show reasonable agreement with observed data. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00410683
• Corporate Authors:

  Printerhall Limited

  29 Newmart Street
  London W1P 3PE,   England 
• Authors:
  • Cresswell, C
  • Hunt, J G
• Publication Date: 1979-10

Language

• French

Media Info

• Features: Figures; References; Tables;
• Pagination: v.p.
• Serial:
  • Traffic Engineering & Control
  • Volume: 20
  • Issue Number: 10
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Accuracy; Crosswalks; Human characteristics; Pedestrians; Simulation; Traffic delays
• Old TRIS Terms: Pedestrian characteristics
• ITRD Terms: 9010: Delay; 9020: Evaluation (assessment); 6473: Mathematical model; 1733: Pedestrian; 1659: Pedestrian crossing; 9103: Simulation; 1255: Vehicle
• Subject Areas: Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Safety and Human Factors; Society;

Filing Info

• Accession Number: 00310575
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Aug 27 1980 12:00AM