OpenTTD
The most active unofficial successor to r/OpenTTD!
...which is admittedly not saying much. We do require you to speak english when posting though but only for practicality, as long as you explain in english as well, you may post in any language you wish! It's just going to be easier for everyone that way. See also the german OpenTTD fediverse community for potential threads in german.
Please do not ask where to get NewGRFs, they are easily obtainable via the in-game content downloader (a.k.a "BaNaNaS" or "the fruit store") or TT-Forums and certain authors have expressed they will not allow downloads of graphics that they no longer provide support for by penalty of copyright law. The other side of the coin is otherwise explained in our "rules" thread. Please read the rules thread before posting or do not post.
view the rest of the comments
Not certain. Admittedly, I usually only make my stations unidirectional, as in all train must enter the same way and there another direction where they all exit the same way.
Make sure the directional lights are placed correctly, and there isn't an unnecessary one placed somewhere.
After messing around with the lights for ages, I just stopped all the trains and deleted the whole station and tracks 10 squares in all directions. I rebuilt everything, and now it works. I wish I knew why, but at least it works. Thanks!