King CountyFor more information about this layer please see the GIS Data Catalog . An asphalt-concrete bump placed across the roadway, to enforce a posted speed limit on vehicles traveling along the roadway.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/979586766a174030b8c8b796492b8f22_0engKing County GIS Open DataPublicSpeed Bump maintained by King County Roads Division [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)Last Modified: 2026-01-06