On 15 Jun, 07:33, "Clive D. W. Feather" c...@on-the-
train.demon.co.uk wrote:
In article .com,
writes

Um, no signal *does* mean green. Unlit signal - not the same thing -
means red.
Does it?
No signal when there should be one, as you pointed out = unlit signal
= red.

I'll have to think about this. There is no "where there should be one"
in railway signalling, but if a driver's route knowledge leads him to
think that there should be a signal at some landmark (in this case, the
headwall) then he should treat its absence as a danger.

There is on the underground. LU's signalling standards state that
every platform shall be provided with a platform starting signal. The
only locations that I'm aware of which are not compliant are Chesham,
Croxley SB and Kensington Olympia.