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What am I missing about the path signs? Or is it some sort of a bug? Because from my understanding, this design should work just fine. And prefers going the right direction rather than going to the depot. If I remove the marked sign, trains #3, #10 and #4 will pass the stopped train successfully. Version of OpenTTD Version: 1.9.3 Expected result Train prefers stop at station rather than going to the depot. Sometimes they pass the stopped train successfully, but most of the time they get stuck. Add a mode to show station catchment only where station window open. Having bi-directional signals can be compared to having a single lane. But in my example, the sign that is pointed by the red arrow prevents other trains to reserve a section on the middle track. This is possible because of uni-directional signals. As I understand from the path signal descriptions, it should allow traffic from its back side. On the screenshot, I stopped Train11 and others got stuck behind it (I expected them to use a middle track to pass the obstacle). On the middle track, I use regular path signals to allow any direction on it. I wanted to use one-way path signals on side tracks to ensure a single direction on them. Now, cant chain signals be automatically selected when more than one rail enters a block See the example: all signals on. Your examples have usually two trains and one exit so they get guarded by chain signals. 2 tracks for both directions and a shared track in between which can be used in both directions for passing slower traffic on "main tracks". From the examples I see them used in situations where a rail is used where more trains can be than exits are. I'm trying to build a two-way railroad with 3 tracks.