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    • Data Files for the 2021 Next-Generation National Household Travel Survey – Origin-Destination Data Addendum for the California Region

    Metadata Updated: July 25, 2025

    The California-based origin-destination data addendum to the 2021 Next-Generation National Household Travel Survey (NHTS) covered the state of California and 16 counties in surrounding states. Conducted for the California Department of Transportation, it provided additional information and spatial granularity about people’s movements to, from, and within the areas under study. Data were collected in two zones: the core area (census blocks in California) and the halo area (16 counties bordering California in Oregon, Nevada, and Arizona). All trips were assigned origin and destination zones, as well as a travel mode, purpose, and distance. Sociodemographic information related to age, income, and gender was also collected. Data records are available in two file types: a shapefile denoting the core and halo areas and a csv file in which each row is a unique combination of each origin-destination zone (excluding trips without a start or end point in California). Visit NREL’s Transportation Secure Data Center for more information about this travel survey.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: Creative Commons Attribution

    Downloads & Resources

    Dates

    Metadata Created Date January 12, 2025
    Metadata Updated Date July 25, 2025

    Metadata Source

    Harvested from OpenEI data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 12, 2025
    Metadata Updated Date July 25, 2025
    Publisher National Renewable Energy Laboratory
    Maintainer
    Identifier https://data.openei.org/submissions/8293
    Data First Published 2024-09-17T21:38:52Z
    Data Last Modified 2025-07-24T22:04:12Z
    Public Access Level public
    Bureau Code 019:20
    Metadata Context https://openei.org/data.json
    Metadata Catalog ID https://openei.org/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Harvest Object Id 200cac07-721c-4483-95ab-5a67c792f932
    Harvest Source Id 7cbf9085-0290-4e9f-bec1-91653baeddfd
    Harvest Source Title OpenEI data.json
    Homepage URL https://data.nrel.gov/submissions/247
    License https://creativecommons.org/licenses/by/4.0/
    Program Code 019:003
    Projectnumber
    Projecttitle
    Source Datajson Identifier True
    Source Hash 0e5faa42b5acd85ea9683363527952671be09b5c821df31c7153a055ff372ce9
    Source Schema Version 1.1

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