"Clive D. W. Feather" wrote in message ...
In article , Geoff Marshall
writes
Edgware Road (a bit like Earl's Court) has always been a nightmare to
navigate.
[...]

Edgware Road westbound is really easy to deal with. About half way down
platforms 3 and 4 are signal repeaters; it's easy enough to place
yourself where both are visible. Whichever one goes green is the train
that will go first.


Clever! But does it work at termini like Hammersmith or Whitechapel.
Is it the signal which decides when the train will leave or the
driver?

dan