Schnellfahrstrecke Köln–Rhein/Main This Route would fit perfect in TSW3. The has a length of 180 km and starts from the already existing Köln Hbf and continues straight to Frankfurt Hbf with mayimal speed of 300 km/h. LZB / PZB is available and the route has many interesting Sceneries. It would bee sooo nice if this route would be available too like Kassel-Würzburg.
What trains run on the route? What is the service pattern like, etc? Why makes it good route, etc. You have to persuade us why you want to see this route
We don't need another high speed German route. If you're going to do anything between Koln and Frankfurt, it needs to be the Rhine Valley, preferably set back in the 1980's.
The best value is SFS Aachen Frankfurt Am Main basically it combines your suggestion SRM with TSW2 TSW 3 compatible SKA. For trains, you have ICE 3 DB BR 403 ICE 4 DB BR412 ICE3M DB BR 406, and lastly Velaro D DB BR407/408. Distance wise 250 km 155 mi if SRM and SKA are merged. In the case of an Aachen Trip Brussels Midi service, you must separate a Duisburg Hbf Amsterdam Centraal Train the one going to HDU merged form with HRR the HDBU when combined with HRR. Spoiler: HDU HDBU if made full names Hollandstrecke Duisburg Utrecht merged with Hauptstrecke Rhein-Ruhr version Hollandstrecke Duisburg/Bochum-Utrecht
