Blue signals just mean that some, but not all, segments ahead are blocked by a signal. Also, this video[1] by Soulless Gaming on "How to Fix Train Path Errors"

Blue signals just mean that some, but not all, segments ahead are blocked by a signal. Also, this video[1] by Soulless Gaming on "How to Fix Train Path Errors" has a lot of useful tips on train/signal troubleshooting. [1] - https://m.youtube.com/watch?v=gmsep-xJXkI https://m.youtube.com/watch?v=gmsep-xJXkI