TRI operate heritage and spot-hire services using n-Wagen and often older locos. You'll see this along the route, particularly at the debut at Koeln.
my feedback: the br425 included in the new timetable has no option for the right destination on the PIS/FIS menu, it just says "nicht einsteigen" (do not board). Please fix that
I drove this route and timetable on TSW6 and was very disappointed with the lack of AI. I couldn't figure out why the only other trains I saw were of the same class I was driving and a couple of others. I'm on a PC and never had to think about layers before but after a bit of research I found that hardly any layers were turned on for this timetable. After I turned on all layers (in either the timetable screen or in TSW settings), this route had come to life! Putting my experience in this thread in case it happens to someone else.
If you go to settings, you can turn all layers on by default - they are turned off to start with in TSW 6.