The Advtrains mod for Luanti
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4 Signals
Signals are devices that give trains certain instructions and/or impose certain limitations on trains. Advtrains comes with a few signals, which are explained in the corresponding sections.
4.1 Types of speed restrictions
There are a few types of speed restrictions that a signal can give. These speed restrictions are independent of each other, and the strictest restriction is chosen as the speed restriction of the train. The speed restrictions need to be set by the specific signs that do so - every
signal can only set (and lift) one type of speed restriction and do not affect other speed restrictions. The naming of the speed restriction types are mainly aesthetic and does not give any particular information for Advtrains - in real life, these are mainly
informative for the driver.
The following types of speed restrictions are used by signals in Advtrains:
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Permanent (“main”) speed restriction (main) (term) The default type of speed restriction. This one is most commonly given by signal lights.
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Temporary speed restriction (temp) (term) Speed restrictions that are temporarily set up, such as near construction sites.
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Line speed restriction (line) (term) Speed restriction that applies to the entire rail line.
The following is an example of a train running with speed restrictions. You may want to read the section on German signal signs first.
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• The train starts without any speed restriction.
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• The train drives past a Lf 1/2 sign with a speed restriction of 8. The train now has a speed restriction of 8.
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• The train drives past a Ks 1 with the Zs 3 indicator showing 12. The train now has a main speed restriction of 12 and a temporary speed restriction of 8, so the train still has a speed restriction of 8.
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• The train drives past a Lf 3 sign. The temporary speed restriction is lifted, and the train now has a speed restriction of 12, set by the main speed restriction (described above).
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• The train drives past a Zs 10 sign. The main speed restriction is lifted, and the train now has no speed restriction.
4.2 Basic signals
The core mod of Advtrains comes with wallmounted signals and a signal with two lights. These signals can only stop the train and lift the main speed restriction of the train.
4.3 Demo signals
The demo signals are provided by the advtrains_interlocking mod. It is similar to the basic signals described above but have three states instead of two.
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Danger (signal aspect) Red light: Stop.
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Free (signal aspect) Green light: Proceed at maximum speed.
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Slow (signal aspect) Yellow light: Proceed with the speed limit of 6m/s.
Demo signals do not allow trains in shunt mode to pass through.
4.4 German signals
The advtrains_signals_ks mod provides a set of signals used in Germany, including (but not limited to) Ks signals that the mod gets its name from.
Due to historical reasons, the phrases ex-DB and ex-DR refer to the former Deutsche Bundesbahn (West Germany) and Deutsche Reichsbahn (East Germany) respectively.
The signal placement conventions assume right-hand traffic.
4.4.1 Ks signals
Ks signals are combined signals that combines the features of main signals and distant signals. The system was developed by the Deutsche Bahn AG after the Deutsche Bundesbahn in West Germany and the Deutsche Reichsbahn in East Germany merged, and the goal
was to replace the other four signaling system in use in Germany, which still exist today.
A real-life Ks signal looks similar to this:
Ks signals in Advtrains have the following aspects:
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Hp 0 (signal aspect) Red light: Stop.
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Ks 1 (signal aspect) Green light: Proceed at maximum speed or with the speed limit shown on the Zs 3 indicator on the main signal (if present) and expect to pass the next main signal at maximum speed or, if the green light is
flashing, with the speed limit shown on the Zs 3v indicator directly below the main signal.
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Ks 2 (signal aspect) Yellow light: Proceed at maximum speed or with the speed limit shown on the Zs 3 indicator on the main signal (if present) and expect to stop at the next main signal.
In addition, Sh 1 (see below) may also appear along with Hp 0:
In this case, the train proceeds in shunt mode.
4.4.2 Shunt signals
4.4.3 Signal signs
Advtrains has a few types of signal signs, which can be placed by the corresponding placers. The aspect of the signal sign can be adjusted with the trackworker, but only in the range limited by the placer.
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Zs 3 (signal aspect) White number on a black background: Proceed with the main speed restriction shown on the sign.
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Zs 10 (signal aspect) An upward-pointing arrow: The speed restriction set by Zs 3 and regular signals is lifted.
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(ex-DR) Lf 1/2 (signal aspect) Black number on an orange background: Proceed with the temporary speed restriction shown on the sign.
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Lf 3 (signal aspect) Black “E” on a white background: The temporary speed restriction set by Lf 1/2 is lifted.
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Lf 7 (signal aspect) Black number on a white background: Proceed with the line speed restriction shown on the sign.
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Ra 10 (signal aspect) The text “Halt für Rangierfahrten” on a white semicircle: Do not proceed if the train is in shunt mode. This signal is conventionally placed on the left side of the track.
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PAM (signal aspect) The text “S” below a green arrow: Proceed without shunt mode. This sign does not have a real-life counterpart.
4.4.4 Differences from real-life signals
The signal book at https://www.bahnstatistik.de/Signalbuecher/SB-DBAG_2006.pdf is used for reference. This list is not comprehensive.
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• The speed is indicated in m/s instead of multiples of 10km/h.
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• Certain visual effects, such as making signal signs reflective or lit at night, are not implemented.
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• Distant signaling is not implemented.
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• The location of most signals are not checked. The location of the mounted Zs 3(v) indicators are checked relative to the main signal.
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• The shunt signals described in this chapter are actually called Schutzsignale. The word Rangiersignale refers to a different set of signals (including acoustic signals) given by the person specifically responsible for train
shunting.
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• The ex-DB definition of Sh 1 is that the track section ahead is clear and does not imply that the driver is allowed to proceed. The driver is expected to ask for permission before proceeding.
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• Distant signal signs (Zs 3v, Lf 6) are currently not available.
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• The Lf 1/2 signal is no longer set up in new rail lines in real life. Lf 1 (expect temporary speed restriction) and Lf 2 (beginning of temporary speed restriction) are used instead.