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CalTrans GIS Data Library
Agency: Caltrans Download: CalTrans GIS Data Library Description: Transportation-related GIS data, including topics such as, roads, buses, transit, rail, freight, ports, airports, projects, air...
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Traffic
Agency: Caltrans Download: Traffic Description: Vehicle speed and volume traffic data, Closed Circuit Television (CCTV) video images, Changeable Message Sign (CMS) traffic messages posted on electronic...
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Performance Measurement System (PeMS)
Agency: Caltrans Download: Performance Measurement System (PeMS) Description: Real time and archived traffic data displayed from over 25,000 individual detectors along the state freeways. Includes...
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Traffic Counts
Agency: Caltrans Download: Traffic Counts Description: Traffic volumes on state highways, truck traffic, and ramp volumes on state freeways.
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San Diego Maps
Agency: San Diego Association of Governments Download: San Diego Maps Description: SANDAG employs sophisticated geographic information systems, a marriage of maps and computers, to help planners and...
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