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Assessment and refinement of real-time travel time algorithms for use in practice : final report, October 2008.

File Language:
English


Details

  • Creators:
    Tufte, Kristin ; Kothuri, Sirisha ORCID ICON IMG
  • Corporate Creators:
    Portland State University. Department of Civil & Environmental Engineering
  • Subject/TRT Terms:
  • Publication/ Report Number:
    OTREC-RR-08-02
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Portland (Oregon)
  • Edition:
    Final report; Oct. 2008
  • Corporate Publisher:
    Oregon. Dept. of Transportation. ITS Unit
  • Abstract:
    The FHWA has strongly encouraged transportation departments to display travel times on their Dynamic Message Signs (DMS). The Oregon ; Department of Transportation (ODOT) currently displays travel time estimates on three DMSs in the Portland metropolitan area. In the near ; future, ODOT would like to make travel time estimates available over the Internet on tripcheck.com and via 511. The primary goal of this project ; was to determine the best approach for ODOT to use to estimate travel times for use on DMS signs, 511 and tripcheck.com. In addition to ; recommending a methodology, a crucial component of this project was to provide confidence in the estimates provided by the methodology. In the ; course of this project, over 500 ground truth travel time runs were collected on freeways in the Portland metropolitan area. These ground truth ; travel times were used to statistically analyze the performance of travel time estimation algorithms. The project report presents overall error ; analysis in addition to segment-by-segment analysis and recommendations for travel time estimation for all freeways in the Portland area.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/17199/dot_17199_DS1.pdf
  • File Type:
    Filetype[PDF - 3.00 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:5b897a8119a3ab3281e141f0d9e2b6b3d6792a86369f2c62f6bfa93500d78bd92bdd3d3c622aff81ed3eb3ba0c0c8bbc62614fcf3288a5628b313c457e7e33d8
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