Difference between revisions of "PBS"
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===Terminus station=== | ===Terminus station=== | ||
| − | This is a normal [http://wiki.openttd.org/index.php/Railway_station#Terminus terminus station], except that PBS is used to allow more than one train to be in the signaling block in front of the station. The entry has a one-way PBS signal, each station track has a normal PBS signal facing the station. The exit has a regular one-way exit signal. The advantage of the station | + | This is a normal [http://wiki.openttd.org/index.php/Railway_station#Terminus terminus station], except that PBS is used to allow more than one train to be in the signaling block in front of the station. The entry has a one-way PBS signal, each station track has a normal PBS signal facing the station. The exit has a regular one-way exit signal. The advantage of the station shown in the screenshot is that it allows a train to leave the station while another train enter it. This could improve throughput, depending on how large your station is. Please note that the exit signal has a gap, to avoid that a train waiting in front of that signal will block the track. |
===PBS bridges=== | ===PBS bridges=== | ||
Revision as of 22:07, 9 August 2008
Contents
Description
PBS stand for Path Based Signaling, which is a different way of signaling trains when they can enter a certain track segment. Although primarily intended in OpenTDD (and in the real world) to provide bi-directional track, without the deadlocks that will occur with regular signaling. Besides that it can also be used to increase performance in certain situations.
At the time of writing, a new implementation of PBS has made its way into the development branch of OpenTTD and might thus be encountered on the #OpenTTDCoop server. The implementation, named YAPP, adds two additional signals. Because PBS takes some getting used to we've collected some examples and hints to work with.
How it works
For an explanation on the basics of YAPP and some examples, please check the YAPP page on the OpenTTD site.
Examples from #OpenTTDCoop games
Terminus station
This is a normal terminus station, except that PBS is used to allow more than one train to be in the signaling block in front of the station. The entry has a one-way PBS signal, each station track has a normal PBS signal facing the station. The exit has a regular one-way exit signal. The advantage of the station shown in the screenshot is that it allows a train to leave the station while another train enter it. This could improve throughput, depending on how large your station is. Please note that the exit signal has a gap, to avoid that a train waiting in front of that signal will block the track.
