A COMPARATIVE STUDY OF DEGREE OF SATURATION FOR ADAPTIVE TRAFFIC CONTROL IN ATMS FRAMEWORK

The degree of saturation (DS) is one of the most important and widely used control parameters to express traffic conditions in computer based adaptive traffic signal control systems. This paper presents a comparative result on degree of saturation used in various algorithms such as SCATS, Barcelona System, and TRACS (TRaffic Adaptive Control System) in Seoul, for adaptive traffic control at signalized intersections. The comparison was conducted under various traffic situations including both undersaturated and oversaturated traffic conditions. The results are basically based on a real-time data set from a stop-line loop detector, and graphical method and residual analysis have been employed to evaluate each algorithm's performance. Results show that each algorithm is efficient (with slight differences) enough to cope with normal traffic conditions, whereas the TRACS' algorithm is superior to others as the DS increases, to form congested or oversaturated traffic conditions.

• Supplemental Notes:
  • Full conference proceedings available only on CD.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
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• Authors:
  • LEE, S-H
  • Lee, S-S
  • Oh, Y-T
  • Choi, K-C
• Conference:
  • Intelligent Transportation: Realizing the Future. Abstracts of the Third World Congress on Intelligent Transport Systems
  • Location: Orlando, Florida
  • Date: 1996-10-14 to 1996-10-18
• Publication Date: 1996

Language

• English

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Adaptive control; Algorithms; Highway traffic control; Intelligent transportation systems; Loop detectors; Percent saturation; Real time control; Real time data processing; Signalization; Traffic characteristics; Traffic congestion; Traffic control
• Uncontrolled Terms: Data; Traffic conditions
• Old TRIS Terms: Advanced systems
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00741655
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 24 1997 12:00AM