So I was playing the Shopping Shuttle scenario, and had activated all the safety systems before leaving the first station. In the scenario you stop at Ebbsfleet and switch cabs to return back the way you came. I didn't bother disabling the safety systems in the cab I left since the reverser was set to off, and there was no master key inserted. However shortly after leaving Ebbsfleet my train comes to a halt. I return to the other cab and when I open the door there were all kinds of alarms going off So my question is: Do drivers really enable/disable the safety systems every time they enter/leave a cab? I would imagine the safety systems are required, so I don't see why this would be an issue.