The General Transit Feed Specification (GTFS) defines an open standard format for exchanging public transportation schedule, geographic and fare information. GTFS “feeds” let public transit agencies p
Iowa turning movement information for intersections on the primary, secondary and municipal roadway systems. The state is divided into 4 quadrants and each quadrant is counted every 4 years.
General vehicle-specific data from the prior 10 years. Data compiled in this format for the Traffic Safety Data and Analysis website (www.iowadot.gov/tsda). Metadata available here.