Is there a way to interrupt (pause) a running session in driver with a driver command. I would like to interrupt the game and trace the behavior of a specific driver in a long running session.
Do you mean something like debugging code by stepping through each command or something else. I don't know of any driver command that can pause everything happening in a session like the pause button. You can use Wait commands but that only stops the one train that is running the command sequence. Everything else continues to move through time.
I have seen it done but that was on the Razorback Railway and the scenarios were all coded with Trainzscript rather than using driver commands. So I would say it is possible or at least was possible back in 2004. Trainzscript has changed a lot since then. I would ask the mod to move this thread to the scripting forum. The guys who know Trainzscript inside and out hang out there.