I'm thinking of a solution like the one in single-player mode (scenario,tutorial). It's basically in the game.
Later, then the train depot etc.
The current solution, that you suddenly take over the train somewhere, is nonsense. People don't even know where they are, what kind of signal it was, what they should react to suddenly, etc. Even a train driver would need a second or two to think about what is happening now.
Thus, the entire section cannot be learned properly.
In addition to the current solution, we definitely need a normal one.