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42 datasets

2020 Adjusted Urban Area

Published by: Caltrans
Last updated: Tuesday, October 7, 2025
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...

Rest Areas

Published by: Caltrans
Last updated: Monday, October 6, 2025
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...

High Occupancy Vehicle

Published by: Caltrans
Last updated: Tuesday, October 7, 2025
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: Tuesday, October 7, 2025
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...

Rail Lines BNSF, UPRR

Published by: Caltrans
Last updated: Monday, October 6, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The objective is to delineate potential crude by rail routes across California, focusing on a subset of the Caltrans "California Rail Network" dataset...

Regional Transportation Planning Agencies

Published by: Caltrans
Last updated: Tuesday, October 7, 2025
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: Tuesday, October 7, 2025
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...

Highway Rail Crossing

Published by: Caltrans
Last updated: Tuesday, October 7, 2025
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...

Automated Weather Observation System

Published by: Caltrans
Last updated: Tuesday, October 7, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This layer was created from the California Aviation System Plan list of Automated Weather Observation Systems. The upgrades and distribution of Automa...

2023 Crash Data on State Highway System

Published by: Caltrans
Last updated: Thursday, July 3, 2025
File types: CSV

The Crash Data On California State Highways Report is produced annually by the California Department of Transportation (Caltrans) to provide high leve...