Freeway Performance Measurement System (PeMS), PeMS 7.0

The Freeway Performance Measurement System (PeMs), which has been under development and operation since 1999, is now the de facto repository for all California Department of Transportation (Caltrans) loop detector data. The system is used in investigating everything, from the characteristics of individual loop detectors to highly aggregated performance trends across the Caltrans districts. PeMS now supports 3000-4000 reports per day, and distributes data to 55 registered Value Added Resellers, 20 of which actively retrieve real-time data. The purpose of PeMS is to collect, process, store, and make available online data from nine California Department of Transportation (Caltrans) districts (District 3-8, 10-12). The data are obtained from 23,871 loops, grouped into 9,306 vehicle detector stations. Of the 30,572 directional-miles of interstate and state highways in California, these loops cover 3,495. The PeMS 7.0 effort involved the completion of the following nine tasks: 1) Maintain Development Prototype; 2) Replace Obsolete Disks on Original Server; 3) Detailed Maintenance Screens and Training Development; 4) Enhanced Diagnostic Screens; 5) Enhanced Freeway configurations; 6) Time of Data and HOV Lanes; 7) Configure and Monitor Freeway Segments; 8) Enhance Map User Interface; and, 9) Development of a Decision Support Tool for TMS Action Plan.

• Record URL:
  http://www.calccit.org/resources/2007_PDF/pems_7_0_final_report.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://www.calccit.org/resources/publications.html
• Corporate Authors:

  University of California, Berkeley

  Center for Innovative Transportation, 2105 Bancroft Way
  Berkeley, CA  United States  94720-383

  University of California, Berkeley

  Berkeley, CA  United States  94720-1720

  California Department of Transportation

  1120 N Street
  Sacramento, CA  United States  95814
• Authors:
  • Varaiya, Pravin P
• Publication Date: 2007-6

Language

• English

Media Info

• Media Type: Print
• Features: Figures;
• Pagination: 21p
• Serial:
  • CCIT Working Paper
  • Publisher: University of California, Berkeley
  • ISSN: 15572269

Subject/Index Terms

• TRT Terms: Freeways; Loop detectors; Performance measurement; Traffic flow; Traffic surveillance; Vehicle detectors
• Identifier Terms: Performance Monitoring System (PeMS)
• Geographic Terms: California
• Subject Areas: Highways; Operations and Traffic Management; I70: Traffic and Transport;

Filing Info

• Accession Number: 01054725
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Report/Paper Numbers: UCB-ITS-CWP-2007-11
• Contract Numbers: Task Order 20
• Files: CALTRANS, TRIS, ATRI, STATEDOT
• Created Date: Jul 16 2007 7:33PM