Tuttlingen–Hattingen railway line

The Tuttlingen–Hattingen railway line, also called the Hattingen curve, is a railway line Baden-Württemberg, Germany. It runs 8.5 km from Tuttlingen to Hattingen (Baden) station, creating a north–south line that bypasses Immendingen to the west. The line forms part of the Gäubahn between and Singen (Hohentwiel).

Services
In addition to freight traffic, the Hattingen curve hosts regular Intercity trains between and points south, including Singen (Hohentwiel), Konstanz, and.