Review of Private Sector Data for Roadway Monitoring

This document presents a summary of Washington State Transportation Center's (TRAC’s) examination of privately collected roadway performance data in the Puget Sound Region. The review examined the accuracy and reliability of those data for use by Washington State Department of Transportation (WSDOT) on roadways in the Puget Sound metropolitan region that are not covered by existing freeway surveillance systems. This project is the first step in the analysis of the potential use of privately collected datasets for arterial performance monitoring for both monitoring of signal control systems and freight (truck movement) analysis. These test results apply only to the Seattle metropolitan region, and only to Spring 2007. The project team’s conclusions from the tests are that the private sector data are currently overly conservative estimates of roadway speed and performance. At this time, it is not recommended that the data be used for arterial performance monitoring. It is recommended that WSDOT and other roadway agencies be open to additional testing of these data sources as improvements are made.

  • Record URL:
  • Supplemental Notes:
    • This research was funded by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    Washington State Transportation Center

    University of Washington, 1107 NE 45th Street, Suite 535
    Seattle, WA  United States  98105

    University of Washington, Seattle

    Transportation Northwest Regional Center X (TransNow)
    Box 352700, More Hall
    Seattle, WA  United States  98195-2700

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Hallenbeck, Mark E
    • Wu, Yao-Jan
  • Publication Date: 2007-5


  • English

Media Info

  • Media Type: Print
  • Edition: Final Technical Report
  • Features: Figures;
  • Pagination: 13p

Subject/Index Terms

Filing Info

  • Accession Number: 01055736
  • Record Type: Publication
  • Report/Paper Numbers: TNW2007-05
  • Contract Numbers: DTRS99-G-0010 (Grant)
  • Files: UTC, NTL, TRIS, USDOT
  • Created Date: Jul 24 2007 8:21PM