Oneway or Twoway Presignals - Revision history

Benny: Marked for deletion

2013-12-17T09:49:39Z

Marked for deletion

Benny: undid last change, didn't notice this page was a part of a guide

2013-11-07T12:14:03Z

undid last change, didn't notice this page was a part of a guide

Benny: Proposed merge

2013-11-07T11:53:54Z

Proposed merge

Nivlac: /* Oneway or Twoway Presignals? */

2011-12-21T18:24:12Z

‎Oneway or Twoway Presignals?

Vitus at 20:07, 22 August 2010

2010-08-22T20:07:47Z

Freshmeatt: Undo revision 11763 by Freshmeatt (Talk)

2010-08-22T19:10:31Z

Undo revision 11763 by Freshmeatt (Talk)

Freshmeatt: Removed first picture to avoid confusion (I myself have spent like 5 minutes trying to find green C presignal.

2010-08-22T16:39:30Z

Removed first picture to avoid confusion (I myself have spent like 5 minutes trying to find green C presignal.

Bodo Thiesen: fixed and/or improved inter guides linking

2010-07-19T16:17:24Z

fixed and/or improved inter guides linking

Sedontane: /* Part 1: The Station entrance problem with two entries */

2007-07-11T19:56:34Z

‎Part 1: The Station entrance problem with two entries

Thgergo: /* Part 1: The Station entrance problem with two entries */

2007-05-06T14:14:21Z

‎Part 1: The Station entrance problem with two entries

← Older revision		Revision as of 09:49, 17 December 2013
Line 1:		Line 1:
		+	{{Delete\|We don't need this, link to this instead: http://wiki.openttd.org/Signals#Pre-signals}}
		+
	[[Presignal_Basics\|<< Presignal Basics]] \| [[Guides:Presignals\|^^ Back to Presignals Guides Index]] \| [[Priority\|Priority >>]]		[[Presignal_Basics\|<< Presignal Basics]] \| [[Guides:Presignals\|^^ Back to Presignals Guides Index]] \| [[Priority\|Priority >>]]
	----		----

← Older revision		Revision as of 12:14, 7 November 2013
Line 1:		Line 1:
−	~~{{Merge \|Signalling}}~~
−
	[[Presignal_Basics\|<< Presignal Basics]] \| [[Guides:Presignals\|^^ Back to Presignals Guides Index]] \| [[Priority\|Priority >>]]		[[Presignal_Basics\|<< Presignal Basics]] \| [[Guides:Presignals\|^^ Back to Presignals Guides Index]] \| [[Priority\|Priority >>]]
	----		----

← Older revision		Revision as of 11:53, 7 November 2013
Line 1:		Line 1:
		+	{{Merge \|Signalling}}
		+
	[[Presignal_Basics\|<< Presignal Basics]] \| [[Guides:Presignals\|^^ Back to Presignals Guides Index]] \| [[Priority\|Priority >>]]		[[Presignal_Basics\|<< Presignal Basics]] \| [[Guides:Presignals\|^^ Back to Presignals Guides Index]] \| [[Priority\|Priority >>]]
	----		----

@@ Line 6: / Line 6: @@
 ==Part 1: The Station entrance problem with two entries==
-[[Image:Twoentry.PNG|thumb|center|404px|A RoRo station with two Entries]]
 In this station the combo presignal can make errors, but can you notice why? If presignals F-H are green then upper-right side of combo presignal C is green too. Even if presignals D and E are red, presignal A remains green. The problem is simple: Presignals calculate signal blocks, not the choosable tracks: trains cannot reach platforms F-H from A through C, but presignals CANNOT see this!
-[[Image:Twoentry2.PNG|thumb|center|404px|The Error: Signal A remains green]]
+[[Image:Twoentry.PNG|thumb|center|404px|Fix this error by making the combo a oneway signal]]
-How to fix this? Just change the combo presignal C to oneway (shown in first picture) or add an oneway combo presignal just after it, like in the next picture:
+How to fix this? Just change the combo presignal C to oneway (shown above) or add an oneway combo presignal just after it, like below:
-[[Image:Twoentry3.PNG|thumb|center|404px|Now an oneway combo presignal is added after it]]
+[[Image:Twoentry3.PNG|thumb|center|404px|Or add a oneway combo presignal is added after it]]
-With this layout, entry presignal A can't look for platforms F-H.
+With this layout, entry presignal A won't be affected by the signals for platforms F-H.
 ----
 [[Presignal_Basics|<< Presignal Basics]] | [[Guides:Presignals|^^ Back to Presignals Guides Index]] | [[Priority|Priority >>]]
 [[Category:Guides]]

@@ Line 3: / Line 3: @@
 =<center>Oneway or Twoway Presignals?</center>=
-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.
+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.
 ==Part 1: The Station entrance problem with two entries==
-[[Image:Twoentry.PNG|thumb|center|370px|A RoRo station with two Entries]]
+[[Image:Twoentry.PNG|thumb|center|404px|A RoRo station with two Entries]]
-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!
+In this station the combo presignal can make errors, but can you notice why? If presignals F-H are green then upper-right side of combo presignal C is green too. Even if presignals D and E are red, presignal A remains green. The problem is simple: Presignals calculate signal blocks, not the choosable tracks: trains cannot reach platforms F-H from A through C, but presignals CANNOT see this!
-[[Image:Twoentry2.PNG|thumb|center|375px|The Error: Signal A remains green]]
+[[Image:Twoentry2.PNG|thumb|center|404px|The Error: Signal A remains green]]
-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:
+How to fix this? Just change the combo presignal C to oneway (shown in first picture) or add an oneway combo presignal just after it, like in the next picture:
-[[Image:Twoentry3.PNG|thumb|center|373px|Now an Oneway Combo Presignal are added after it]]
+[[Image:Twoentry3.PNG|thumb|center|404px|Now an oneway combo presignal is added after it]]
-With this Entry Presignal A cant look for Platforms F-H.
+With this layout, entry presignal A can't look for platforms F-H.
 ----
 [[Presignal_Basics|<< Presignal Basics]] | [[Guides:Presignals|^^ Back to Presignals Guides Index]] | [[Priority|Priority >>]]
 [[Category:Guides]]

← Older revision		Revision as of 19:56, 11 July 2007
Line 10:		Line 10:
	With this Entry Presignal A cant look for Platforms F-H.		With this Entry Presignal A cant look for Platforms F-H.

		+	== ==
		+	[[Guides\|<< Back to Index ]] \| [[Priorities\| Part 3: Priorities >>]]
	[[Category:Guides]]		[[Category:Guides]]