Signal placing and train directioning

[qff]

How could I run this circuit most effciently? (In terms of signal type and placement)
The circuit and train routes are seen in the screenshot.
I've read about advanced signal placement on wiki.openttd.org but I don't really get it?

qff

[nicfer]

Convert the normal signals into combo signals near the tracks union. And the one way signals there must be two way because the trains will can exit from there but not enter.

P.S.: Wrong forum.....

[Death]

Read this:
http://www-user.tu-chemnitz.de/~dou/ttd ... ml#signals