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Path based signalling with dual-sided stations

Arqade Asked on February 1, 2021

I have just been introduced to Path Based Signalling (referred to as PBS) by a friend, and no matter how much I read I can’t seem to figure out how to get a station to work properly which has trains coming in from both sides.

I have ended up with using Path Signal behind each platform entrance to ‘terminate’ the reserved train paths to allow other trains to reserve a path across the signal block. I have included a screenshot to better illustrate my current way of working with these new signals.

I have circled the One-Way Path Signals to highlight them.

OpenTTD dual-sided PBS station

As you can see, this setup works okay as the first trains reserved path is terminated allowing the second train (grain/livestock) to enter the station.

I’d like to know is this optimal, or even correct usage of these signals?

One Answer

You are on the right track (pun not intended).

There are just a few minor improvements you can make to this station:

  • It doesn't seem like there is a way for your left most track to actually reach the 'out' line at the bottom right of the screen without going through a lot of bends.
  • Its not optimal to have both the in and out lines share a common path as that can cause a lot of backup, especially if you have a slow train.
  • Avoid unnecessary turns in your tracks as that causes slowdown as well.

My favorite type of station to use is a "Ro-Ro" station where trains entering and leaving don't interfere with each other.

This is the simplest version to build and easiest to extend to whatever size station you want:

station image
(source: openttd.org)

The same concept can also be applied to dual sided stations:

station image 2
(source: openttd.org)

Answered by l I on February 1, 2021

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