Bug report: PBS

Hello,

after a long time of "Why do I have so many lost trains???", I know what´s 
happening:

Consider a station as follows:

=PXD---SS---DX== 1
==XD---SS---DXP= 2

where = is an ordinary track, - is a station track, S is a Prellbock (Josef or 
someone else, what is the English term for it?), D is a two-way-signal, P is 
a path-based presignal, at the X the two tracks are linked.

So I have a station I can enter from two opposite sides, but the right and the 
left tracks aren´t linked in the middle.

This station-setup works in principle, with one bug remaining: Consider the 
case where the two tracks on the left are both occupied by trains. The two 
tracks on the right are both empty. A train arrives at (2). The presignal is 
set to green, since both right tracks in the station are empty. So far, it´s 
ok, the train passes the presignal.

But the PBS-algorithm doesn´t find a route into the station in this case 
(seems that it considers the tracks on the right and on the left as linked). 
It instead reserves a route towards 1. So the train leaves with having passed 
the station, and gets lost... :-(

And thanks for making such stations possible at all!

Wolfgang

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