The Freeway Performance Measurement System (PeMS), PeMS 9.0: Final Report

Under development and operation since 1999, PeMS now is the de facto repository for all Caltrans fixed-location detector data. The PeMS 9.0 effort completed seven tasks: (1) Control Algorithm Support; (2) Integration of Census Data in PeMS; (3) Investigation of Fidelity of 3rd Party Detectors; (4) OD estimation algorithm based on the fusion of the FasTrak data and the ITS-sensors; (5) Incorporating speed measurements reported from the field; (6) Incorporation of New Photolog Format; and (7) Development of Diagnostic Routines for Rural Facilities.