King CountyFor more information about this layer please see the GIS Data Catalog . Traffic signals, also known as traffic lights or stoplights, are devices that control the flow of traffic at intersections, pedestrian crossings, and other locations. They use lights and symbols to communicate with drivers and other road users, instructing them on what to doArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/4ba5fcb22bfe4c90ae306abe16ac9e94_0engKing County GIS Open DataPublicSignals maintained by King County Road Services [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)Last Modified: 2026-01-06