Traffic Signal

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.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://www.arcgis.com/home/item.html?id=ca6ad078a6f6415389e220704b7698ac&sublayer=170
issued 2021-10-18T14:03:37.000Z
landingPage https://opendata.dc.gov/datasets/DCGIS::traffic-signal
license https://creativecommons.org/licenses/by/4.0
metadata_type geospatial
modified 2025-07-21T03:13:39.000Z
old-spatial -77.1118,38.8212,-76.9108,38.9907
publisher City of Washington, DC
resource-type Dataset
source_datajson_identifier true
source_hash 1d9da2bdd6baa984984fa6cb70e05cc2f56cad4cd3279a293e9b93376424ea1c
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]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • ddot
  • traffic-safety
  • traffic-signal
  • transportation
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer DCGISopendata
maintainer_email gisgroup@dc.gov
metadata_created 2025-09-24T02:01:37.497171
metadata_modified 2025-09-24T02:01:37.497180
notes <DIV STYLE="text-align:Left;"><P><SPAN>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).</SPAN></P><P><SPAN>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.</SPAN></P></DIV>
num_resources 7
num_tags 12
title Traffic Signal