DETECTING SIGNALS OF BOTTLENECK ACTIVATION FOR FREEWAY OPERATIONS AND CONTROL

The techniques used to manage freeway traffic, including any application of intelligent transportation systems, can be improved by better understanding of the formation and dissipation of queues at active freeway bottlenecks. This paper contributes to this understanding. It is shown that freeway bottlenecks' activations can be diagnosed definitively using archived induction loop detector data (measured at 20- or 30-sec intervals) from two sites in Toronto. Once the bottlenecks' locations and times of activation were determined, potential signals of their activations were explored. Findings show that certain potential signals were evident immediately before upstream queue formation, and that these were reproducible from day to day (over three or four days examined) at the two sites studied. These signals could be used for systematic investigation of bottleneck behavior in either real time or in retrospect as part of a real-time ITS control system. Limitations of the study and directions for future research are discussed.

  • Availability:
  • Corporate Authors:

    Taylor & Francis

    325 Chestnut Street, Suite 800
    Philadelphia, PA  United States  19106
  • Authors:
    • Bertini, Robert L
  • Publication Date: 2005-1

Language

  • English

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Filing Info

  • Accession Number: 00989104
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 22 2005 12:00AM