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498 datasets

Safety Roadside Rest Areas

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Caltrans provides Safety Roadside Rest Areas as a part of the State Highway System pursuant to Streets and Highways Code, Sections 218-226.5. Safety R...

Vegetation - Clear Creek Monocline Ridge [ds995]

Published by: California Department of Fish and Wildlife
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

California Native Plant Society (CNPS) and California Department of Fish and Wildlife (CDFW) cooperated to created a detailed vegetation inventory to ...

2020 Adjusted Urban Area

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Caltrans is responsible for the decennial production of the Adjusted Urban Area Boundaries for the State of California. The CA 2020 adjusted urban are...

High Occupancy Vehicle

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

High-Occupancy Vehicle (HOV) lane, also known as the carpool or diamond lane, is a traffic management strategy to promote and encourage ridesharing; t...

Express Lanes

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The California HOV/Express Lane Business Plan is a framework for Caltrans and its partners to focus statewide activity during 2009-2011 that will lead...

California All Public Roads Network

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The Caltrans All Roads Linear Referencing Services (LRS) dataset provides the base geometry for federally required Highway Performance Monitoring Syst...

Highway Rail Crossing

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The PUC data contains a [grade] attribute that allows for the isolation of at-grade crossings. There are 10,478 at-grade records in the most recent PU...

Regional Transportation Planning Agencies

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The RTPA polygon feature class provides California Regional Transportation Planning Agencies (RTPA) legislative boundaries, primarily for regional pla...

National Highway System

Published by: Caltrans
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The National Highway System consists of a network of roads important to the economy, defense and mobility. On October 1, 2012 the existing National Hi...

Wildland Urban Interface

Published by: CAL FIRE
Last updated: Thursday, May 21, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The current dataset is appropriate for displaying the overall pattern of WUI development at the county level, and comparing counties in terms of devel...