Why is my chain signal red instead of blue?

[TochMaarDaan]

Hello everyone on this forum,

I have a problem in my factorio world, my trains make a deadstop and don't go into the station i made for them.
The trains stop at a red signal which should be blue I think.

Can someone help me with this problem? I have added a screenshot in the attachments and a txt file with the blueprint.

Thanks in advance,
Daan

[zOldBulldog]

The lowermost train in your stacker is sticking out past the signal, so it is making the segment behind all of the stacker stops (the segment that enters the stackers) occupied... this the chain signal is red.

To fix simply make the stacker just a little longer.

[TochMaarDaan]

Thank you zOldBulldog,

I now understand that the trains block the train signal block in front of it when they were sticking out.
I will fix this asap, thanks again!

- Daan