DETERMINATION OF OPTIMAL SETS OF STAGES FOR AN INTERSECTION

The assignment of traffic signals to stages to be used by optimal control is split up into two sub-problems: finding the set of all the allowed stages and choosing stages to use. Allowed stages are built by considering each signal and the set of its compatible signals. The choice of the stages to use is made in function of the saturation and demand flows by computing the minimum cycle length that avoids saturation and by eliminating stages while this cycle is possible. Validation by comparing performances of the sets of stages chosen by the algorithm to those of other sets of stages, in open and closed loop, shows a delay reduction (6% to 85%). Real time control gives better results than fixed cycle with an optimal set of stages, but gives worst results with other sets. The method could improve fixed plan production and allows the use of a set of stages for which the on-line optimisation is tractable. For the covering abstract see ITRD E114174.

• Corporate Authors:

  ERTICO

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  Brussels,   Belgium  B-1050

  ITS America

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  VERTIS

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• Authors:
  • MAGNE, L
  • FARGES, J-L
  • HENRY, J-J
• Conference:
  • PROCEEDINGS OF THE 7TH WORLD CONGRESS ON INTELLIGENT SYSTEMS
  • Location: Turin , Italy
  • Date: 2000-11-6 to 2000-11-9
• Publication Date: 2000

Language

• English

Media Info

• Features: References;
• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Calculation; Conferences; Demand; Intelligent transportation systems; Methodology; Real time control; Real time data processing; Traffic control; Traffic flow; Traffic signal cycle; Traffic signals
• ITRD Terms: 6464: Calculation; 8525: Conference; 576: Cycle (traffic signals); 285: Demand (econ); 8735: Intelligent transport system; 9102: Method; 8679: Real time; 654: Traffic control; 671: Traffic flow; 565: Traffic signal
• Subject Areas: Operations and Traffic Management;

Filing Info

• Accession Number: 00931814
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Oct 3 2002 12:00AM