Office of the Chief Technology OfficerCurb: The edge of roads, alleys, ramps or parking lots, other than those for which polygons can be formed. Curbs are rims, usually made of concrete, along a roadway, forming an edge for a sidewalk. Curbs do not occur where the sidewalk meets the road, such as at wheelchair or access ramps, and driveways. Hidden Curb: Hidden curbs are depicted where curbs cross beneath underpasses or through tunnels. The location of these features are inferred.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/e9a55de8751a464f8c0c402d4dfa3c60_3engOpen Data DCPublicCurbs 2021 [District of Columbia--Washington]Web servicesDistrict of Columbia--WashingtonDistrict of Columbia2021