Update: I modified the scenario a bit to use only non-roundabout intersections, and there were no more collisions (At least, I haven't seen any collisions yet. It doesn't mean they can't/wont still happen rarely). The primary culprit from what I saw was Trains hitting themselves, and now they can't ...

For the curious, the second demo takes 40 4:6 trains running on fully-automatic pathfinding, no player trains, and within a couple minutes reduces them to this: It's fun to watch, I haven't seen trains go this badly before. For the most part they end up clipping their own tails and then, because the...

What did you do? Using a base with roundabouts/track junctions and Train Stations which are often enabled/disabled by circuit network. What happened? Trains occasionally collide with one another themselves while going through roundabouts, and often create deadlocks in RCS controlled junctions. What...