I have the following setup:
Outpost station
One t-junction with main line
Main station
What's confusing me here is that it shouw "No path" on the "tail" train, so I believe it tries to go back to the left and then down, which is incorrect, because train here should go to the right, then down and left, to the main line.I was trying different signal setups but still can make the train go from main base to the outpost. So train goes normally from outpost to main base, but doesn't want to go back.