Basic meaningExpect stop
The associated main signal is showing signal 20A or 20B Stop.
Light signals · Distant signals
Distant signals
A distant signal gives advance information about the associated main signal ahead.
Distant-signal indications
Signals 23,
24 and 25
Every distant-signal indication flashes. The two fixed positions are yellow above green.
Basic meaningExpect reduced speed
The associated main signal is showing signal 21 Proceed at reduced speed.
Basic meaningExpect proceed
The associated main signal is showing signal 22 Proceed.
Standalone distant signal
Braking distance
before the main signal
A standalone distant signal is placed far enough in advance for a train to stop before the associated main signal. The normal technical minimum is 800 metres; speed and gradient can require more, and an approved exception can be shorter.
Mast markingOne yellow reflective band
Normal technical minimum800 metres
Identification shownOn both associated signals
Combined main and distant signals
Four- and five-
lamp assemblies
The upper two or three lamps are the main signal. The lower two lamps are the distant signal for the next main signal.
Four-lamp assembly
Signal 21 + distant signal 24
The lower green main-signal lamp shows signal 21 Proceed at reduced speed. Below it, flashing yellow and flashing green show distant signal 24.
Five-lamp assembly
Signal 22 + distant signal 24
The upper and lower green main-signal lamps show signal 22 Proceed. Below them, flashing yellow and flashing green show distant signal 24.
Four lamps at stopBoth distant-signal positions are dark.
Five lamps at stopBoth distant-signal positions are dark.
Repeater signals
Repeating signals
21 and 22
A repeater is dark when its associated main signal shows stop. Its identification uses the same identity as the main signal, with REP placed before it.
REPL 123ABC
Repeater dark
REPL 123ABC
Repeats signal 21
REPL 123ABC