Badische Hauptbahn
Already in 1945, the U.S. occupation forces in their zone of occupation required the northern part of the Baden Mainline to be restored to operation. The line was returned to working order to Freiburg, on 7 September, and the line was restored to Basel on 5 November. However, the French occupation troops were ordered to dismantle one track of the Offenburg–Freiburg–Müllheim and Radolfzell–Konstanz sections to reduce the business on the now single-track right bank (that is east or north of the Rhine) line and thus increase traffic for the French National Railways (SNCF) on the left bank. In fact, this work was limited to the Offenburg–Denzlingen section and so Freiburg was spared from the dismantling. The number of trains running between Freiburg and Offenburg was now much less substantial than directly after the opening of the line, 100 years earlier. Moreover, Germans could only use third class on the majority of the few trains running until 14 May 1950. In 1952, there were again 12 pairs of expresses on the Baden Mainline.