{"@type": "dcat:Dataset", "accessLevel": "public", "contactPoint": {"@type": "vcard:Contact", "fn": "DCGISopendata", "hasEmail": "mailto:gisgroup@dc.gov"}, "description": "<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>", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://maps2.dcgis.dc.gov/dcgis/rest/services/DCGIS_DATA/Transportation_Signs_Signals_Lights_WebMercator/MapServer/170", "format": "ArcGIS GeoServices REST API", "mediaType": "application/json", "title": "ArcGIS GeoService"}, {"@type": "dcat:Distribution", "accessURL": "https://maps2.dcgis.dc.gov/dcgis/services/DCGIS_DATA/Transportation_Signs_Signals_Lights_WebMercator/MapServer/WMSServer?request=GetCapabilities&service=WMS", "format": "OGC WMS", "mediaType": "application/vnd.ogc.wms_xml", "title": "OGC WMS"}, {"@type": "dcat:Distribution", "accessURL": "https://opendata.dc.gov/api/download/v1/items/ca6ad078a6f6415389e220704b7698ac/csv?layers=170", "format": "CSV", "mediaType": "text/csv", "title": "CSV"}, {"@type": "dcat:Distribution", "accessURL": "https://opendata.dc.gov/api/download/v1/items/ca6ad078a6f6415389e220704b7698ac/geojson?layers=170", "format": "GeoJSON", "mediaType": "application/vnd.geo+json", "title": "GeoJSON"}, {"@type": "dcat:Distribution", "accessURL": "https://opendata.dc.gov/api/download/v1/items/ca6ad078a6f6415389e220704b7698ac/kml?layers=170", "format": "KML", "mediaType": "application/vnd.google-earth.kml+xml", "title": "KML"}, {"@type": "dcat:Distribution", "accessURL": "https://opendata.dc.gov/api/download/v1/items/ca6ad078a6f6415389e220704b7698ac/shapefile?layers=170", "format": "ZIP", "mediaType": "application/zip", "title": "Shapefile"}, {"@type": "dcat:Distribution", "accessURL": "https://opendata.dc.gov/datasets/DCGIS::traffic-signal", "format": "Web Page", "mediaType": "text/html", "title": "ArcGIS Hub Dataset"}], "identifier": "https://www.arcgis.com/home/item.html?id=ca6ad078a6f6415389e220704b7698ac&sublayer=170", "issued": "2021-10-18T14:03:37.000Z", "keyword": ["ddot", "traffic safety", "traffic signal", "transportation"], "landingPage": "https://opendata.dc.gov/datasets/DCGIS::traffic-signal", "license": "https://creativecommons.org/licenses/by/4.0", "modified": "2026-06-05T07:00:44.000Z", "publisher": {"name": "City of Washington, DC"}, "spatial": "-77.1118,38.8212,-76.9108,38.9907", "theme": ["geospatial"], "title": "Traffic Signal"}