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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Traffic Signal

    Metadata Updated: April 8, 2026

    The dataset contains the location and attributes of traffic signals in the District of Columbia. Attributes are aggregated to the controller level (ACISA), where a single controller directs one or more traffic signals at one intersection or clustered intersections. The following attributes of signalized intersections are tracked: leading pedestrian intervals (LPIs), No Turn on Red (NTOR) signage, all-pedestrian phases, bike phases, queue jumps, transit signal priority (TSP), pedestrian recall mode, HAWK/PHB signals, and accessible pedestrian signals (APS).

    This data is updated periodically and may not be current at the time of viewing. More information on safety features implemented at traffic signals can be found here: https://visionzero.dc.gov/pages/engineering.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: Creative Commons Attribution

    Downloads & Resources

    Dates

    Metadata Created Date April 30, 2024
    Metadata Updated Date April 8, 2026

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 30, 2024
    Metadata Updated Date April 8, 2026
    Publisher City of Washington, DC
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=ca6ad078a6f6415389e220704b7698ac&sublayer=170
    Data First Published 2021-10-18T14:03:37.000Z
    Data Last Modified 2026-04-05T07:00:41.000Z
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 5a118f22-c4cf-40c6-bd6f-baa6df1a97e1
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::traffic-signal
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1118,38.8212,-76.9108,38.9907
    Source Datajson Identifier True
    Source Hash d3e1d3766410f469306e704a47369b1c1613f24243fd76ce94a89233aec0d075
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1118, 38.8212, -77.1118, 38.9907, -76.9108, 38.9907, -76.9108, 38.8212, -77.1118, 38.8212}

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