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Freeway Performance Measurement System(PeMS), PeMS 6.5

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  • Varaiya, Pravin

Abstract

PeMS 6.5 is the latest of seven task orders devoted to research, development, andmaintenance of the PeMS system. While most PeMS research grants coincide with fiscal and academic years (July-June), this project started mid-year in response to a number of feature and maintenance requests (i.e. it was too late for Pe MS 6 and too soon for PeMS 7). PeMS collects, processes, stores, and makes available online data from nine Caltrans districts (03-8, 10-12). The data are obtained from 23,871 loops 1, grouped into 9,306 vehicle detector stations (VDS). These loops cover 3,495 out of 30,572 directional-miles of interstate and state highways in California. We·now describe the accomplishments under the six tasks that constitute the PeMS 6.5 project.

Suggested Citation

  • Varaiya, Pravin, 2006. "Freeway Performance Measurement System(PeMS), PeMS 6.5," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt5dc02196, Institute of Transportation Studies, UC Berkeley.
    • Handle: RePEc:cdl:itsrrp:qt5dc02196
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