I think the route, or rather, the total work of art, only works with authentic vehicles from the epoch shown, i.e. the DR period around 1980 : evil:: evil:: evil:
wer kann sagen, dass nicht schon eine modernisierte Freeware-Version ins Auge gefasst wird?!
The common locomotives on the route (BR 95, E 251, BR 185, BR 218, BR 232) that are currently available for the TS can all make the route. It's just a question of what speed and load. I've already tried everything when testing the track construction!