On Jan 22, 6:25*pm, MarkVarley - MVP
wrote:
I've often wondered and was reminded today, why is there a delay in
opening the doors for trains arriving at Victoria?
At other terminating stations the doors are released as soon as the
train has stopped, but at Victoria there seems to be a delay, anyone
know why?
--

I understood it was because the GPS system, which controls the
selective door opening, can't see any of its satellites when it is
under the building built on top of the platforms. The conductor has to
wait for the system to time out allowing it to be overriden. It only
really seems to affect the Southern platforms, the South-Eastern
platforms (1-7) generally seem to have normal opening times.