Donautalbahn
The station is a railway junction, where the Gäu Railway from Stuttgart to Singen meets the Danube Valley Railway from Ulm to Donaueschingen. Tuttlingen station now served only passenger trains. No freight is still handled at the station. Intercity and Regional-Express services are now operated by Deutsche Bahn, while "Ringzug" and "Naturpark-Express" services are operated by Hohenzollerische Landesbahn (which is mainly owned by the Baden-Württemberg government). The present-day railway operations at the station are owned by DB Station&amp;Service. Deutsche Bahn currently classifies the station in station category 3.