TRAFFIC STUDIES AT T-JUNCTIONS. (1) THE EFFECT OF APPROACH SPEED ON MERGING GAP ACCEPTANCE

In this paper are reported the results of an experiment in which the gap acceptance behaviour of left-turning minor road traffic merging at a T-junction was related to the speeds of approaching vehicles in the main road. In one phase of the experiment, police activity on the main road had the effect of reducing the mean speed of main road traffic. Results support a modified time hypothesis, in which the median accepted gap D (in ft) is related to the approach speed V (in ft/sec.) by D = 38 + 5V. (for D in M and V in m/sec., D = 11.5 + 5V). (A) /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:
  • Cooper, D F
  • Smith, W
  • Broadie, V
• Publication Date: 1976-6

Language

• French

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 256-7
• Serial:
  • Traffic Engineering & Control
  • Volume: 17
  • Issue Number: 6
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Approach; Arterial highways; Correlation analysis; Decision making; Gap acceptance; Intersections; Left turns; Mathematical models; Merging traffic; Police; Secondary roads; Speed; Traffic surveys; Vehicle spacing
• Uncontrolled Terms: Traffic studies
• Old TRIS Terms: Approach speed
• ITRD Terms: 6527: Correlation (math, stat); 2248: Decision process; 2748: Main road; 6473: Mathematical model; 647: Merging traffic; 1522: Police; 2773: Secondary road; 5408: Speed; 694: Vehicle spacing
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; Security and Emergencies; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00142103
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Serial
• Files: ITRD, TRIS
• Created Date: Jun 17 1977 12:00AM