SIMULATION OF TRAFFIC FLOW AT SIGNAL-CONTROLLED ROUNDABOUTS

A computer simulation model, SIGART, has been developed to study the operation of signal controlled traffic circles (roundabouts). The SIGART can be divided into 2 parts: the first part accepts input data and performs necessary calculaton - its output consists mainly of signal-settings and processed traffic flow details; second part performs a simulation study using the traffic signal information supplied. The validation of the model is described. The relationships between queueing delay cycle time, demand flow and inscribed circle diameter were obtained for a three-arm traffic circle operating under idealised conditions of equal demand flows on each approach, balanced turning movements and equal vehicle speeds. For specific conditions for 3- or 4-arm signalized traffic circle with up to three lanes on an approach and desired turning movements the program SIGART could determine for the required inscribed diameter, expected queue lengths and associated delays at both internal and external stoplines.

• 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:
  • SALTER, R J
  • Okezue, O G
• Publication Date: 1988-3

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 142-147
• Serial:
  • Traffic Engineering & Control
  • Volume: 29
  • Issue Number: 3
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Queuing; Signalization; Traffic circles; Traffic delays; Traffic flow; Traffic simulation
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00468216
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Apr 30 1988 12:00AM