London Underground Signalling System

The London Underground Signalling System (LUSS for short) is the signalling system used in London Underground. In the simulator, is used in the City of Thames map.

Signals
Signal type	LUSS signal	Instructions
2 aspect signal - White signal sign		🟢⚫Proceed (green light) ⚫🔴Stop (red light)
2 aspect signal + route indicator - White signal sign		⚪⚪⚪🟢⚫Proceed, the signal shows the position of the next track switch (green light) ⚪⚪⚪⚫🔴Stop (red light)
2 aspect signal - Yellow signal sign		🟢⚫Proceed (green light) ⚫🟡Proceed, slow down to stop at next signal (yellow light)
4 aspect signal - White + Yellow sign		🟢⚫🟢⚫Proceed (2 green lights) 🟢⚫⚫🟡Proceed, slow down to stop at next signal (Green + Yellow light) ⚫🔴⚫⚫Stop (Red light)
1 aspect signal		🔴Stop
Shunt disc		Stop (horizontal disc) Proceed (if combined with 2 color signal, ignore red light) (Diagonal disc)
3 aspect signal (+ speed sign)		Proceed (if higher speed on sign, increase speed after the end of the train has passed the sign) (green light) Proceed, slow down to stop at next signal (yellow light) Stop (red light)
Speed sign		Proceed, change speed after cab has passed signal If a arrow is attached, only change speed when following arrow direction

Security / Signalling Systems
ATB • LUSS • ZUB