TOPIC: pf.yapf.rail_firstred_twoway_eol

from the article:
If all possible paths start with red two-way signals, the paths are considered equal and a choice is made without considering the network after the signals.
If there is a single path not starting with a red two-way signal, that path is automatically chosen without considering the usefulness of the path itself.

it is not correct. YAPF calculate routes after twoway signals (if they are green).