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User Guide

WhistleWiz edited this page Aug 6, 2026 · 2 revisions

This is a short guide to understanding the signaling rules for the default look of the signals provided by this mod.

The Basics

Signals allow you to drive trains more safely, as they can warn you about the state of the track ahead of your train, preventing collisions and other types of accidents. Main signals control mainlines, while shunting signals control tracks within stations. Other types of signals may be present near relevant track points, like buffer stops.

This system is based on the Yugoslav system, itself based on the German one, as such it matches the location of DV. It doesn't have all features of the system however, as that would require manual signal placement for more complex rules, and gameifies some bits to make it easier to use in multiplayer (like the presence of semaphores on all junctions outside stations).

Reserving Signals

The mod adds a new menu to the comms radio that allows reserving signals. Just point the laser at one, choose the duration, and the signal will be reserved, which means any other signal pointing towards these tracks will show a "Stop" aspect. Switches will also be aligned for you, preventing switch trailing.

Mod Settings

  • Custom Pack: choose signals from another mod instead of the default look.
  • Enable Special Matching Path: enables the optional matching path aspects in signals. Disabling this will not show reds when a switch is set against you. It is not guaranteed this is implemented by other signal packs.
  • Exit Signals on Storage Tracks: disable this to have shunting signals rather than exit signals on storage tracks of stations.

Reading Signals

Main Signals

Main signals are made of a black rectangle with rounded top and bottom. They're marked with a red and white stripped pole. These come in 3 variations, depending on where they are and what they can show:

  • 3 lights (green, red, and yellow)
  • 4 lights (yellow, red, green, and yellow)
  • 5 lights (yellow, red, green, and 2x yellow)
Aspect Meaning
UI_M3_closed UI_M4_closed UI_M5_closed Stop.
UI_M3_next_stop UI_M4_next_stop UI_M5_next_stop Clear, expect stop.
UI_M3_clear UI_M4_clear UI_M5_clear Clear, expect clear.
UI_M3_next_restricted UI_M4_next_restricted UI_M5_next_restricted Clear, expect restricted speed.
UI_M4_restricted_next_stop UI_M5_restricted_next_stop Restricted speed, expect stop.
UI_M4_restricted UI_M5_restricted Restricted speed, expect clear.
UI_M4_restricted_next_restricted UI_M5_restricted_next_restricted Restricted speed, expect restricted speed.
UI_M5_enter_restricted Entry allowed into station, track may be obstructed, do not exceed 20km/h.

What is Restricted Speed?

This means at least 1 switch in your current path is set to its diverging branch. This usually means the lower speed branch, but may not always be the case.

What is that final aspect?

The restricted entry aspect (red above flashing yellow) is shown only when the track into a station is occupied, and a reservation is made to allow entry. It is only ever shown by an entry signal. If the track is free, another, less restrictive aspect will be shown as usual.

Tip

In case you are confused, remember:

  • A signal has 3 states: stop, clear, and restricted speed. This is shown in the top lights.
  • A signal can show which of the 3 states the next signal shows. This is shown in the bottom lights.

Additional Indicators

Indicator Meaning
UI_Distant_Board Signal acts as the distant signal for the next signal. Also present in all Distant Signals.
UI_Distant_Short Distance to next signal is shorter than usual, exercise caution.
UI_Cube_depart Departure allowed.
UI_Cube_TT_Yard Tracks set to [LETTER] yard.
UI_Plate_TT_Name Signal name.

Distant Signals

Distant signals do not control any track by themselves, they can only show what the next signal is showing. They are made of a black rectangle with a rounded bottom, and flat top. They have a green and a yellow lamp. They're marked with a black and white stripped pole.

Repeater signals are similar, but they are placed much closer to the main signal they repeat, in places of poor visibility. They look like the regular distant signals, but with an extra white lamp below the others.

Distant Repeater Meaning
UI_D2_next_stop UI_R3_next_stop Expect stop.
UI_D2_clear UI_R3_clear Expect clear.
UI_D2_next_restricted UI_R3_next_restricted Expect restricted speed.

Shunting Signals

These are usually dwarf signals, protecting switches inside stations. They have a red and a white lamp. At major tracks, you may see a larger shunting signal, with a blue stripped pole. Instead of a red and a white lamp, they have a blue and a white lamp.

Behaving in much the same way, but requiring normal trains to respect them, are the Spacing Signals. These are a made of a black rectangle with cut corners, and have 2 red lamps horizontal to eachother, and 2 white lamps diagonal to eachother.

Shunting Spacing Meaning
UI_S_stop UI_SB_stop UI_SP_stop Stop.
UI_S_clear UI_SB_clear UI_SP_clear Clear.

Old Signals

Certain areas of DV have not upgraded to the new colour light signals, which means you will find semaphores on them. Their aspects have the same meanings as the regular signals.

Main Signal Meaning
UI_SM1_stop Stop.
UI_SM1_clear Clear.
UI_SM2_restricted Restricted speed.
Distant Signal Meaning
UI_SD_next_stop Expect stop.
Shunting Signal Meaning
UI_SS_stop Stop.

Misc Signals

There's a few other signals present in the world.

Signal Meaning
UI_BF_stop Buffer stop.
UI_ShuntEnd Shunting movement limit.
UI_T_stop Stop, turntable disconnected.
UI_T_clear Turntable connected.

Signal Names

Signals are named with a simple convention, depending on what are.

  • Block signals use a unique number.
  • Entry signals use a letter, starting from A.
  • Exit signals use a letter and a number, starting from the last entry signal, depending on which exits they can path to. All exit signals that can exit through the same track have the same letter, with increasing numbers. If a signal can path to multiple exits, the letter is increased once again.
    • If a station has entry signals A and B, the first exit signal is C#.
  • Distant signals are named Ps[SIGNAL], with [SIGNAL] being the main signal that controls them.
  • Repeater signals are named Pp[SIGNAL].
  • Shunting signals, similar to block signals, just use a unique number.
  • Spacing signals are named according to the track number, and a unique letter.

Phone Reservation

Before station entry signals, you can find an phone box marked with a T character, next to the tracks.

phone

When you interact with it, you can reserve the entry signal for 60 seconds. If the reservation is a success, it will ring once. If the reservation fails, it will ring thrice. When interacting with the phone box and a reservation for the signal already exists, it will be cleared, and the phone will ring twice. Reserving through these is the same as reserving with the comms radio.

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