City of Madison Map DataIntersection Control Inventory. City of Madison:City of Madison Traffic Engineering for arterial and collector intersections.Greater Madison MPO for local intersections. Not complete.Outside City of Madison:Greater Madison MPO for arterial and collector intersections. Local intersections not collected.Sources:Updated: 6/2022.2020 orthophotos, Google Street View. Traffic Control for Intersections with Arterial or Collector Roadway Int_Class: Highest level of Roadway Functional Class (MPO) for intersection. A: Arterial C: Collector L: Local IntControl: Traffic Control at Intersection STA: Stop (All Way) . All approaches have a stop sign. STM: Stop (Multi) Locations that have more than 2 approaches with stops, but not all are stop controlled. 3-way stops are considered Multi. ST: Stop. One street has stop signs, while the other has no control. 3-way stops are considered Multi. YD: Yield. Any non-roundabout intersection with a yield sign. YDR: Yield (Round) . Roundabouts with yield signs. NO: No Control. No control identified U: Unknown. Unable to identify SL: Signal. Signal for any direction.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/e799f3a3b791447eb05f28065ebaf76e_59engCity of Madison, WI GIS Open Data PortalPublicIntersection Control [Wisconsin--Madison]Web servicesWisconsin--MadisonWisconsinLast Modified: 2022-11-01