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i need help with trains

https://forums.factorio.com/viewtopic.php?t=133810

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i need help with trains

Posted: Fri Jun 05, 2026 12:19 pm
by szym
i need some help with my trains i tried many things (i know how bad the base is) with the rails and signals themself but couldnt get them to work i use my own blueprint book for the rails the trains are automated to deliver items when neccesary via circuits, and the delivery for copper ore isnt working also this is made on space exploration but everything regarding the trains vannila I also added my blueprint book to the file comment

pics

Re: i need help with trans

Posted: Fri Jun 05, 2026 2:00 pm
by jdrexler75
The track at the bottom is signaled for one-way traffic, but in the wrong direction for your train. So it can't go there (or anywhere since that's the only path).

Re: i need help with trans

Posted: Fri Jun 05, 2026 3:09 pm
by mmmPI
signal oneway.png
signal oneway.png (3.63 MiB) Viewed 218 times

Re: i need help with trans

Posted: Sat Jun 06, 2026 7:15 am
by szym
thanks for the help, though it looks like i added 2 of the same pictures i feel like that part is fixed rn though i have a bigger problem with this one

Re: i need help with trans

Posted: Sat Jun 06, 2026 8:47 am
by Hurkyl
The train at the bottom of the picture? It can't go left because that block of rails is unusable: two ends of the block are one-way in opposite directions, so trains can only travel out, never in.

Going to the right? Are those signals aligned to make it 2-way? I can't tell for sure. And your picture doesn't show the entire rail block the train would go into (which includes everything in that messy intersection with rails going everywhere).

Anyways, there is a useful debugging tool: do you know how to give trains orders to make a temporary stop? When you are doing that, it shows you the path the train would take to travel to the stop before you place it.

So what you can do is you can drag your mouse along the rail line that you think it should be able to drive on, and then when the path vanishes, that's where you've screwed things up so trains can't travel.

Re: i need help with trans

Posted: Sat Jun 06, 2026 11:15 am
by jdrexler75
In general it seems you need to learn how one-way and two-way signals work.

When you place a signal on only one side of the track, a train can't pass this signal in the other direction at all. The whole track become a one-way track if there is any one-sided signal.

To make a track two-way, all signals on that section need to be two-way signals, with a signal on both sides at every place where you need a signal. Although for two-way tracks, there should only be signals at the ends of each section or you will get deadlocks.
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