AN EXPERIMENT TO INVESTIGATE SATURATION FLOWS AT TRAFFIC SIGNAL JUNCTIONS

The article gives an account of a full-scale traffic experiment carried out at TRRL to investigate the determinants of saturation flow at conventional traffic signal junctions. Saturation flows were measured for each of the individual lanes at an approach and for the approach as a whole. Main factors investigated were, (1) width of approach and number of lanes, (2) radius of turn, (3) stagger and constriction at 'misaligned' and exit-constricted junctions, and (4) saturation flow for right-turning movements as a function of opposing flow. The results provide a provisional framework for predicting saturation flows at traffic signal junctions. It is hoped to produce fully calibrated predictive relationships for saturation flows at conventional traffic signal layouts. (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:
  • KIMBER, R M
  • SEMMENS, M C
• Publication Date: 1982-3

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 110-117
• Serial:
  • Traffic Engineering & Control
  • Volume: 23
  • Issue Number: 3
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Calculation; Forecasting; Intersections; Mathematical models; Peak periods; Percent saturation; Right turns; Signalized intersections; Traffic congestion; Traffic control; Traffic flow; Traffic lanes; Traffic signals; Turning radius
• ITRD Terms: 6464: Calculation; 632: Congestion (traffic); 132: Forecast; 455: Junction; 6473: Mathematical model; 612: Peak hour; 654: Traffic control; 671: Traffic flow; 565: Traffic signal
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00362332
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: HS-033 069
• Files: ITRD, TRIS
• Created Date: Oct 30 1982 12:00AM