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Rail signal: Difference between revisions

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(Use third-person perspective, move external links to section, replace model railway analogy with concise explanations, update circuit network section)
(Added full history, more info)
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== States ==
== States ==
Rail signals have four states:
Rail signals have four states:
; Green
* <span style="color:#00FF00">Green</span>
: The monitored block is empty
The monitored block is empty.
; Orange
* <span style="color:#cd6600">Orange</span>
: A train is not able to stop before the monitored block and will pass the signal. The [[debug mode|debug option]] <code>show_train_stop_point</code> can be used to see the distance locomotives need to stop.
A train is not able to stop before the monitored block and will pass the signal. The [[debug mode|debug option]] <code>show_train_stop_point</code> can be used to see the distance locomotives need to stop.
; Red
* <span style="color:#cd0000">Red</span>
: The monitored block is not empty or another signal monitoring it is orange.
The monitored block is not empty or another signal monitoring it is orange.
; Blinking
* Blinking
: The signal is not on a rail or the monitored block is also the block before the signal
The signal is not on a rail or the monitored block is also the block before the signal.


When a signal is red locomotives will stop before it. A [[rail chain signal]] can be used to make locomotives stop earlier.
When a signal is red locomotives will stop before it. A [[rail chain signal]] can be used to make locomotives stop earlier.
Line 31: Line 31:
== Creating pass-by stations ==
== Creating pass-by stations ==
Rail signals can be used to create pass-by stations. Pass-by stations can enable more traffic on a single, long rail and can be creating by splitting a single rail into two rails parallel to each other. One of the split rails should have rail signals at the beginning and end on the right-hand side going forward and the other should have rail signals at the beginning and end on the right-hand side going backward.
Rail signals can be used to create pass-by stations. Pass-by stations can enable more traffic on a single, long rail and can be creating by splitting a single rail into two rails parallel to each other. One of the split rails should have rail signals at the beginning and end on the right-hand side going forward and the other should have rail signals at the beginning and end on the right-hand side going backward.
== History ==
{{history|0.13.0|
* The rail signal is now connectable to the circuit network.
* Halved the mining time of the rail signal.
* Rail signal stop placement indicator added.
}}
{{history|0.11.4|
* Rail signal that fails to divide two sections of rail will blink multiple colors.}}
{{history|0.9.0|
* Players no longer collide with the rail signal.}}
{{history|0.5.0|
* Players can now see a visualization of the protected rail area when building/selecting the signal.}}
{{history|0.4.1|
* Rail signals connect to more than one rail when connected to a junction.}}
{{history|0.4.0|
* Introduced}}


== See also ==
== See also ==
Line 37: Line 60:
* [[Train]]
* [[Train]]


== External links ==
=== External links ===
* [http://imgur.com/a/zG13U#0 Tutorial image album on rail signals]
* [http://imgur.com/a/zG13U#0 Tutorial image album on rail signals]
* [http://wiki.openttd.org/Signals#Block_signals Block signals in the game OpenTTD]
* [http://wiki.openttd.org/Signals#Block_signals Block signals in the game OpenTTD]

Revision as of 22:33, 31 January 2017


Rail signal/infobox

The rail signal divides rails into blocks and allows locomotives to react to other locomotives allowing multiple trains use the same rails without colliding. Blocks span all connected rails regardless if a train can actually travel between them.

Signals dividing rails into blocks. Each block is highlighted with a different color.

Direction

Which block a signal monitors depends on which side of a rail it is placed. When a signal is on the right-hand side of the track it monitors the block in front of it. When placing rail signals the the opposite signal positions will be highlighted in white. If a signal doesn't have a signal opposite of it locomotives will only be allowed to travel in the direction that has a signal on the right-hand side.

States

Rail signals have four states:

  • Green

The monitored block is empty.

  • Orange

A train is not able to stop before the monitored block and will pass the signal. The debug option show_train_stop_point can be used to see the distance locomotives need to stop.

  • Red

The monitored block is not empty or another signal monitoring it is orange.

  • Blinking

The signal is not on a rail or the monitored block is also the block before the signal.

When a signal is red locomotives will stop before it. A rail chain signal can be used to make locomotives stop earlier.

Circuit network

The interface for configuring a circuit network connection for a rail signal.

A circuit network condition can be configured that when true will make the rail signal red.

A rail signal can also output three different signals depending on if it is in its green, orange or red state. If a rail signal is red because of a circuit network condition the rail signal won't output a circuit network signal.

Creating pass-by stations

Rail signals can be used to create pass-by stations. Pass-by stations can enable more traffic on a single, long rail and can be creating by splitting a single rail into two rails parallel to each other. One of the split rails should have rail signals at the beginning and end on the right-hand side going forward and the other should have rail signals at the beginning and end on the right-hand side going backward.

History

  • 0.13.0:
    • The rail signal is now connectable to the circuit network.
    • Halved the mining time of the rail signal.
    • Rail signal stop placement indicator added.
  • 0.11.4:
    • Rail signal that fails to divide two sections of rail will blink multiple colors.
  • 0.9.0:
    • Players no longer collide with the rail signal.
  • 0.5.0:
    • Players can now see a visualization of the protected rail area when building/selecting the signal.
  • 0.4.1:
    • Rail signals connect to more than one rail when connected to a junction.

See also

External links