Freeway Performance Measurement System (PeMS)

This dissertation describes California's Performance Measurement System (PeMS). It first describes PeMS web-based applications, defining PeMS performance measures and explaining their roles in transportation management. PeMS applications, as well as an advanced traveler information system (ATIS) application and loop diagnostics applications are described. The study then demonstrates the potential of PeMS for academic research by describing three statistical studies on capacity analysis of bottlenecks, travel time variation in Los Angeles, and the impact of incidents on overall delay. The components that comprise PeMS, including data collection, sensor technology database structure, and system architecture of PeMS applications are described. The study concludes with a description of several PeMS algorithms that correct data errors, calculate speed from single loops, predict travel times, and find shortest routes.

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  • Supplemental Notes:
    • Publication Date: July 2003. California PATH Program, Institute of Transportation Studies University of California, Berkeley CA. Remarks: Thesis (Ph. D. in Engineering)--University of California Berkeley. Format: website
  • Corporate Authors:

    University of California, Berkeley

    California PATH Program, Institute of Transportation Studies
    Richmond Field Station, 1357 South 46th Street
    Richmond, CA  United States  94804-4648

    University of California, Berkeley

    Department of Electrical Engineering and Computer Sciences
    Berkeley, CA  United States  94720

    California Department of Transportation

    1120 N Street
    Sacramento, CA  United States  95814
  • Authors:
    • Chen, Chao
  • Publication Date: 2003


  • English

Media Info

  • Pagination: xi, 199 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00961282
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Report/Paper Numbers: UCB-ITS-PRR-2003-22
  • Created Date: Aug 4 2003 12:00AM