Scenario cards: a second try

[Steamtrains]

I'm trying to implement a computer-generated program for car movements (been working on it on & off for a few years...) And a few days back the thought came into my (feeble) mind to throw in some "glitches" into the system which would throw a wrench into the "normal" operations of the layout. Scenearios like "Passing track at Portales undergoing maintenance-do not use"...Still working on that as well....