Presignal Basics

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Presignal Basics

The Presignal Basics is explained here: how they work, how they behave, and how does work a terminal station, and whats the use of the combo presignal.

Part 1: Identify the signals

There is five type of signals in OTTD. If you click on a normal signal with CTRL is held, these signals will appear:

-Normal Signal: It doens`t have any special alibity, it turns to red if the next signal block is blocked by any train.

-Entry Presignal: It works like a normal signal, plus it turns to red if all exit presignals, or combo presignals are red after it.

-Exit Presignal: It works same as normal signal,but it signs the entry, or combo signals, if self is red.

-Combo Presignal: It have Entry and Exit presignal alibities both: It turns to red if all Exit/Combo are red, and it signs for the Entry/Combo Presignals, if the self is red.

-PBS Signal: Not a Presignal, it enables more trains in one signal block, since PBS means Path Based Signaling. This type of signal isnt explained here.

Part 2: The Station Problem

Part 3: How to use the Combo Presignals

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