Having a blast on trying different pathing designs.
But I had to give it a shot...
The infinite omni-directional abyss! The signals don't work very well. I have no idea what could be confusing them...
In case anyone has tried to put signals down on weird tracks and found it doesn't work, you can place a straight rail first then the lights on top, then all the other tracks on top of that. It ends in failure even on simple intersections, but it is technically possible..
Since they didn't work anyway I removed the traffic lights, paved roads and no blinding lights. Missed a couple lights in this screenshot though..
It's able to be completed with enough resets, but the trains don't seem to like it very much. I can't imagine why...
Overall solid game :)