AN ITERATIVE GROUP-BASED SIGNAL OPTIMIZATION SCHEME FOR TRAFFIC EQUILIBRIUM NETWORKS

This paper presents an iterative scheme for a combined signal optimization and assignment problem, using a traffic model from the well-known procedure TRANSYT. The signal settings are optimized by means of a group based technique, in which the signal timings are specified by the common cycle time, the start time and duration of the period of right of way for each signal group in the network. The optimization problem was formulated as integer program and solved by a set of heuristics. Given the optimized signal settings determined from the group-based technique, a path-based assignment algorithm is employed to obtain the equilibrium traffic pattern using the sensitivity information for TRANSYT model. Based on the equilibrium flow pattern, the group-based optimization algorithm is then used to determine a better set of signal timings. The procedure is repeated until certain convergence criteria are satisfied. A numerical example is employed to demonstrate the benefits obtained from this iterative scheme.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/5121625
• Corporate Authors:

  Institute for Transportation, Incorporated

  1410 Duke University Road
  Durham, NC  United States  27705
• Authors:
  • Wong, S C
  • Yang, Chenxuan
• Publication Date: 1999-8

Language

• English

Media Info

• Pagination: p. 201-217
• Serial:
  • Journal of Advanced Transportation
  • Volume: 33
  • Issue Number: 2
  • Publisher: John Wiley & Sons, Incorporated
  • ISSN: 0197-6729
  • EISSN: 2042-3195
  • Serial URL: http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2042-3195
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Equilibrium (Systems); Network analysis (Planning); Optimization; Signal processing; Traffic assignment; Traffic flow; Traffic signal phases
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00769687
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 13 1999 12:00AM