Karlsruhe - Freiburg im Breisgau Romantic and modern the route leads along the romantic Black Forest via Raststatt, Baden Baden and Offenburg to Freiburg. Deutsche Bahn AG has been promoting the expansion and construction of the Karlsruhe-Freiburg railway line since the early 1990s. The Karlsruhe-Basel route is therefore one of the most important DB magistrals. And it would be a nice way to close the gap in order to be able to drive from Cologne to Basel in several tasks, which is desired by many TS fans. If you were to build in the section Offenburg - Kehl as well, you would have even more variety. There are goods to be driven there, regional and long-distance transport. At 118 kilometers, the route would be no longer than the last published Frankfurt - Koblenz and Karlsruhe Hbf would not have to be rebuilt as they already exist.