https://wiki.openttdcoop.org/api.php?action=feedcontributions&feedformat=atom&user=Freshmeatt 2026-05-10T06:26:27Z User contributions MediaWiki 1.25.2 https://wiki.openttdcoop.org/index.php?title=Oneway_or_Twoway_Presignals&diff=11764 2010-08-22T19:10:31Z

<p>Freshmeatt: Undo revision 11763 by Freshmeatt (Talk)</p> <hr /> <div>[[Presignal_Basics|&lt;&lt; Presignal Basics]] | [[Guides:Presignals|^^ Back to Presignals Guides Index]] | [[Priority|Priority &gt;&gt;]]<br /> ----<br /> <br /> =&lt;center&gt;Oneway or Twoway Presignals?&lt;/center&gt;=<br /> Signals have two sides, in the basics part, the other side wasn`t important, since trains can`t turn back, etc. etc... But in more complex things, a badly placed twoway Combo Presignal can make errors in your network.<br /> <br /> ==Part 1: The Station entrance problem with two entries==<br /> [[Image:Twoentry.PNG|thumb|center|370px|A RoRo station with two Entries]]<br /> In this station the combo presignal can make errors, but can you notice why? If F-H presignals are green then Combo presignal C´s upper-right side is green too. Then if D and E exit Presignals, is red, then A Entry presignal remains green. The problem´s source is: Presignals calculates Signal Blocks, not the Possible chosable tracks: from A trough C and reach F-H platforms is impossible, but presignals CAN see this!<br /> [[Image:Twoentry2.PNG|thumb|center|375px|The Error: Signal A remains green]]<br /> How to fix this? Just change the Combo Presignal C to oneway or add an oneway Combo Presignal after it, like in the next picture:<br /> [[Image:Twoentry3.PNG|thumb|center|373px|Now an Oneway Combo Presignal are added after it]]<br /> With this Entry Presignal A cant look for Platforms F-H.<br /> <br /> ----<br /> [[Presignal_Basics|&lt;&lt; Presignal Basics]] | [[Guides:Presignals|^^ Back to Presignals Guides Index]] | [[Priority|Priority &gt;&gt;]]<br /> [[Category:Guides]]</div>

Freshmeatt https://wiki.openttdcoop.org/index.php?title=Oneway_or_Twoway_Presignals&diff=11763 2010-08-22T16:39:30Z

<p>Freshmeatt: Removed first picture to avoid confusion (I myself have spent like 5 minutes trying to find green C presignal.</p> <hr /> <div>[[Presignal_Basics|&lt;&lt; Presignal Basics]] | [[Guides:Presignals|^^ Back to Presignals Guides Index]] | [[Priority|Priority &gt;&gt;]]<br /> ----<br /> <br /> =&lt;center&gt;Oneway or Twoway Presignals?&lt;/center&gt;=<br /> Signals have two sides, in the basics part, the other side wasn`t important, since trains can`t turn back, etc. etc... But in more complex things, a badly placed twoway Combo Presignal can make errors in your network.<br /> <br /> ==Part 1: The Station entrance problem with two entries==<br /> In this station the combo presignal can make errors, but can you notice why? If F-H presignals are green then Combo presignal C´s right side is green too. Then if D and E exit Presignals, is red, then A Entry presignal remains green. The problem´s source is: Presignals calculates Signal Blocks, not the Possible chosable tracks: from A trough C and reach F-H platforms is impossible, but presignals CAN see this!<br /> [[Image:Twoentry2.PNG|thumb|center|375px|A RoRo station with two Entries. The Error: Signal A remains green]]<br /> How to fix this? Just change the Combo Presignal C to oneway or add an oneway Combo Presignal after it, like in the next picture:<br /> [[Image:Twoentry3.PNG|thumb|center|373px|Now an Oneway Combo Presignal are added after it]]<br /> With this Entry Presignal A cant look for Platforms F-H.<br /> <br /> ----<br /> [[Presignal_Basics|&lt;&lt; Presignal Basics]] | [[Guides:Presignals|^^ Back to Presignals Guides Index]] | [[Priority|Priority &gt;&gt;]]<br /> [[Category:Guides]]</div>

Freshmeatt