index : advtrains.git	atcjit doc l10n luaatcdebug master new-ks new-ks-orwell profiler route_prog_rework techage tracy trainhud trainhud-unifont
	Advtrains mod for minetest.	orwell

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	Commit message (Expand)	Author	Age
...
*	Proper implementation for getting on by walking into train, rework damage and...	orwell96	2017-02-09
*	Merge PR from gpcf (Get on by walking in)	orwell96	2017-02-07
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| *	Merge branch 'master' of https://github.com/orwell96/advtrains	Gabriel Pérez-Cerezo	2017-02-05
| |\
| * |	Found out why collision box does not fit train	Gabriel Pérez-Cerezo	2017-01-29
| * |	Added getting on and off by walking in and out. Default seat on subway is now...	Gabriel Pérez-Cerezo	2017-01-29
* | |	Use identical proxy environment with swapped metatable to not having to setfe...	orwell96	2017-02-07
* | |	Check if node is actually loaded before querying get_meta()	orwell96	2017-02-05
* | |	Do not invalidate paths unnecessarily	orwell96	2017-02-05
* | |	Fix "lock couples" checkbox on wagon properties form	orwell96	2017-02-05
* | |	Fix ATC components being randomly ignored by trains.	orwell96	2017-02-05
* | |	Fix itrainmap	orwell96	2017-02-05
* | |	Fix LuaAtc Interrupt saving	orwell96	2017-02-05
* | |	Even more bugfixes	orwell96	2017-02-04
| |/ |/|
* |	Commit 1.6.2	orwell96	2017-02-04
* |	pack for release	orwell96	2017-02-03
* |	fix up stuff in itrainmap	orwell96	2017-02-03
* |	Revert change to node pos hashes, and rewrite trackdb to use individual coord...	orwell96	2017-02-03
* |	Add quick position lookup by punching nodes	orwell96	2017-02-03
* |	add wallmounted light signal	orwell96	2017-02-03
* |	Fix itrainmap not working	orwell96	2017-02-03
* |	Merge PR from mbb: add better textures and crafts	orwell96	2017-02-02
|\ \
| * |	add better textures and crafts	mbblp	2017-02-02
* | |	Add documentation and pack for release	orwell96	2017-02-02
* | |	LuaAutomation: Add interrupt to the ingame API and implement initialization c...	orwell96	2017-02-02
* | |	LuaAutomation - Basic component implementation	orwell96	2017-02-02
* | |	Fix collision to work with pos node hashes	orwell96	2017-02-02
* | |	Lua automation - initial incomplete coding	orwell96	2017-02-02
* | |	Replace all table indices that were pos_to_string strings with node hashes.	orwell96	2017-01-31
* | |	Join itrainmap mod into the modpack	orwell96	2017-01-31
* | |	Remove lua_atc from advtrains main mod.	orwell96	2017-01-31
|/ /
* |	Limit dtime to prevent trains moving too far in a single step	orwell96	2017-01-29
* |	Add getter calls for raw nodedb	orwell96	2017-01-29
* |	Fix wagon properties not saved on button click	orwell96	2017-01-29
|/
*	Fix a crash, update translations and zip file	orwell96	2017-01-28
*	Multiple major changes:	orwell96	2017-01-28
*	remove tunnelborer	orwell96	2017-01-25
*	Document door animation parameters	orwell96	2017-01-25
*	Add forced get-on/off to prevent trains being unusable due to closed doors.	orwell96	2017-01-25
*	Rewrite seating system	orwell96	2017-01-25
*	update zip	orwell96	2017-01-25
*	Fix typo that caused crash	orwell96	2017-01-25
*	Fix find&replace mistake that broke ATC command interpretation	orwell96	2017-01-24
*	Fix crash when train went off track	orwell96	2017-01-24
*	Create new models and textures for japanese train	orwell96	2017-01-24
*	Do not recover wagons from minetest's static storage	orwell96	2017-01-23
*	Add intllib support and German translation	orwell96	2017-01-23
*	update zip	orwell96	2017-01-19
*	Merge branch 'master' of https://github.com/orwell96/advtrains	orwell96	2017-01-19
|\
| *	Merge pull request #17 from gpcf/master	orwell96	2017-01-19
| |\
| | *	Removed last occurrence of minetest.env	Gabriel Pérez-Cerezo	2017-01-18

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generated by cgit v1.2.3 (git 2.39.1) at 2025-02-15 15:16:31 +0000

\batchmode
\makeatletter
\def\input@path{{/home/moritz/Home/Projekte/Minetest/minetest/mods/advtrains/assets/}}
\makeatother
\documentclass[english]{paper}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage{geometry}
\geometry{verbose,tmargin=1cm,bmargin=1cm,lmargin=1cm,rmargin=1cm}
\setlength{\parindent}{0bp}
\usepackage{graphicx}
\usepackage{babel}
\begin{document}

\title{Minetest Mod - Advanced Trains {[}advtrains{]}}

\title{Interlocking System Guide}
\maketitle

\section{Introduction}

In real-world railways, a so-called interlocking system is a set of
railway signals and trackside equipment. Its purpose is to prevent
conflicting train movements which otherwise could result in derailing
or colliding trains. If you want more information, just search for
``railway interlocking'' on the internet.

Real-world interlocking systems perform this task by setting routes.
A route is a path along a track that a train can safely pass. To set
a route for a train, the signalman (the operator of a signal box)
has to set switches (turnouts) to the correct position and lock them
in order to make a signal for a train show ``Proceed''. In newer
systems, this is done automatically by the interlocking system. A
route can not be set if switches are locked to a wrong position by
another route or if any portion of the route is occupied by a train.

The interlocking system in this Minetest mod tries to follow real-world
interlocking systems as far as applicable. It divides tracks into
track sections and implements a route setting mechanism following
the same principle.

However, for the sake of simplicity of implementation and usage, not
all concepts of real-world interlocking have been taken over. Especially,
there is no mechanism for overlap.

If you are looking for a place to learn how real-world interlocking
systems work, have a look at ``SimSig''. By looking at their simulations,
you can obtain experience on how to set up your own interlocking systems
in AdvTrains. The SimSig glossary is a good place to look up unknown
terms in this document.

\section{Setting up track sections}

In the real world, a line of track is divided into so-called track
sections, or track circuits. Those systems often can not tell where
exactly a train is, but only which track sections it occupies. A route
can never be set through an occupied track section.

A track section often covers:
\begin{itemize}
\item A section on a main running line, between two signals
\item A single turnout
\item A rail crossing, or a set of turnouts acting as a double/single slip
switch
\item A siding
\end{itemize}
You will find some examples on how to interlock certain patterns later.

\subsection{Track Circuit Breaks}

In this mod, you will not directly configure the locations of track
sections. Instead, you designate the borders of each track section
using a special node, the Track Circuit Break, abbreviated TCB.

For example, if you want to create a track section for a piece of
a main running line, you set up two TCBs at the ends of this track
circuit.

Setting up a TCB works as follows:
\begin{enumerate}
\item Place a TCB node somewhere near the place where the circuit break
is going to be located.
\item Right-click the TCB node
\item Punch the rail which should act as TCB
\end{enumerate}
The result should look like this:

\includegraphics[width=10cm]{0_home_moritz_Home_Projekte_Minetest_minetest_m___s_assets_lyx_img_screenshot_20180830_142551.png}