Yield Line - Revision history

Thraxian: Reverted edits by Ojatonakyq (Talk) to last revision by Scobos

2010-11-15T15:14:40Z

Reverted edits by Ojatonakyq (Talk) to last revision by Scobos

2010-11-15T11:51:03Z

2010-05-11T20:40:28Z

‎The Construct

2010-05-11T20:37:30Z

‎The Construct

2010-05-11T20:37:04Z

‎The Construct

2010-05-11T20:35:57Z

2010-05-11T20:31:03Z

2010-05-11T20:15:23Z

‎The Logic

2010-05-11T20:13:45Z

‎The Logic

2010-05-11T19:59:18Z

‎The Logic

@@ Line 1: / Line 1: @@
 ''by [[User:scobos|scobos]]
->== Overview ==
+== Overview ==
 Yield Lines are temporary extra tracks than run parallel to a ML or SL.  The idea is force slow(er) trains to move to the side and allow fast(er) trains to pass.
 == Development ==

@@ Line 1: / Line 1: @@
 ''by [[User:scobos|scobos]]
-== Overview ==
+>== Overview ==
 Yield Lines are temporary extra tracks than run parallel to a ML or SL.  The idea is force slow(er) trains to move to the side and allow fast(er) trains to pass.
 == Development ==

@@ Line 70: / Line 70: @@
 == The Construct ==
-[[Image:YieldLineLogic.png|thumb|right|200px|Yield Line in Action]]
+[[Image:YieldLineConstruct.png|thumb|right|200px|Yield Line in Action]]
 Using the Logic Train newGRF and Osai's NOT and OR Gates, I was able to construct a sample Yield Line.

← Older revision		Revision as of 20:37, 11 May 2010
Line 84:		Line 84:

	'''Cons:'''		'''Cons:'''
		+
	Low/Medium Traffic: Lead trains always yield		Low/Medium Traffic: Lead trains always yield

@@ Line 78: / Line 78: @@
 '''Pros:'''
 Catches slow trains that are jamming the ML
 Allows overtaking

@@ Line 6: / Line 6: @@
 == The Concept ==
-[[Image:YieldLineConcept.png|thumb|right|200px|The joiner concept]]
+[[Image:YieldLineConcept.png|thumb|right|200px|Yield Line Concept]]
 Often a ML or SL can become slightly jammed by the presence of slower trains.  This can happen when trains are out of date and haven't replaced yet, or simply when they are carrying full loads back to a drop on the same line as empty trains.  Ideally, we would be able to separate trains to different tracks based on speed.  Since currently this is not possible, a theoretical work-around is to separate trains based on Gap Distance.
@@ Line 13: / Line 13: @@
 == The Logic ==
-[[Image:YieldLineLogic.png|thumb|right|200px|The joiner concept]]
+[[Image:YieldLineLogic.png|thumb|right|200px|Yield Line Logic]]
 Q is the Entry Combo Signal that determines whether a train can continue on the ML or must go to the Yield Line (YL).  Note the penalty on the YL.
@@ Line 40: / Line 40: @@
 C: If there is a train on the YL, he might be slow and we should try to pass!  (Continue on ML)
 If there is no train on the YL... well, this by itself doesn't really tell us much!
 So the logic, first in words, then formula, is that we want:
@@ Line 63: / Line 64: @@
 |}
 '''Cons:'''
-== Progress on joiners ==
+== Progress on Yield Line==
 {{R&D_header|R&D Overview}}
 {{R&D_content|Yield Line|[[User:scobos|scobos]]|wip|Currently Editing|unclaimed||unclaimed|| | }}
 {{R&D_footer}}
 [[Category:Research]]

@@ Line 17: / Line 17: @@
 Using Osai's definition of 0 for Green and 1 for Red:
-{| align="center" border="1"
+{| align="center" border="1" cellspacing="20"
 !  !! 1 !! 0
 |-
 ! Q || Will Yield || Will Not Yield
 |-
-| X || Train Following || No Train Following
+! X || Train Following || No Train Following
 |-
-| B || Train on ML Ahead || No Train on ML Ahead
+! B || Train on ML Ahead || No Train on ML Ahead
 |-
-| C || Train on YL || No Train on YL
+! C || Train on YL || No Train on YL
 |}
@@ Line 51: / Line 51: @@
 Truth Table:
 A = (No Train on ML or YL) = B NOR C
-{| align="center" border="1" celpadding="40"
+{| align="center" border="1" cellspacing="20"
 ! X !! A !! Q
 |-

← Older revision		Revision as of 20:13, 11 May 2010
Line 32:		Line 32:
	'''Why These Inputs Matter'''		'''Why These Inputs Matter'''

		+	X: If there is a train behind us, we might be slow and should consider yielding.
		+	If there is no train behind us, we probably aren't slow and can continue.
		+
		+	B: If there is a train right in front of us (who didn't yield), we probably aren't slow.
		+	If there is no train right in front of us, we might be slow and should consider yielding.
		+
		+	C: If there is a train on the YL, he might be slow and we should try to pass! (Continue on ML)
		+	If there is no train on the YL... well, this by itself doesn't really tell us much!
		+
		+	So the logic, first in words, then formula, is that we want:
		+	(Train Will Yield) if (Train is Behind) and (No Train on ML) and (No Train on YL)
		+	Q = X NAND B NAND C
		+
		+	which is the same as saying:
		+	(Train Will Yield) if (Train is Behind) and [No Train on ML or YL]
		+	Q = X AND (B NOR C)
		+
		+	Truth Table:
		+	A = (No Train on ML or YL) = B NOR C
		+	{\| align="center" border="1" celpadding="40"
		+	! X !! A !! Q
		+	\|-
		+	\| 0 \|\| 0 \|\| 0
		+	\|-
		+	\| 0 \|\| 1 \|\| 0
		+	\|-
		+	\| 1 \|\| 0 \|\| 0
		+	\|-
		+	\| 1 \|\| 1 \|\| 1
		+	\|}

	'''Pros:'''		'''Pros:'''