Innovative methods for calculation of freeway travel time using limited data : executive summary report.
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Innovative methods for calculation of freeway travel time using limited data : executive summary report.

Filetype[PDF-188.93 KB]


  • English

  • Details:

    • Publication/ Report Number:
    • Resource Type:
    • OCLC Number:
      664733595
    • Edition:
      Executive summary report
    • NTL Classification:
      NTL-PLANNING AND POLICY-Travel Demand ; NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS ;
    • Abstract:
      ODOT’s policy for Dynamic Message Sign

      utilization requires travel time(s) to be displayed as

      a default message. The current method of

      calculating travel time involves a workstation

      operator estimating the travel time based upon

      observation of high-density vehicle detectors.

      With the proliferation of cell phone usage and the

      advent of computer-aided dispatch links from 911

      call centers, incident detection no longer requires a

      high density of vehicle detectors along the highway.

      Therefore, ODOT’s future freeway management

      system deployments (Cleveland, Akron-Canton,

      Dayton-Springfield, and Toledo) will only have a

      limited set of vehicle detectors for data sampling.

      ODOT currently utilizes two different algorithms to

      estimate travel time in its Freeway Management

      Systems for display on Dynamic Message Signs.

      These methods may no longer be accurate with

      limited vehicle detector data. Therefore, innovative

      methods for accurately calculating travel times are

      needed to maintain the message sign policy.

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