"Tony Dragon" wrote in message
news
I seem to recall that the wait for the doors to open was due to waiting
for a GPS signal to say it was OK.

It isn't on SWT Desiros - the guard's door opens as soon as he operates the
controls. The delay is then down to the time taken for him to check the
train is correctly platformed; he then releases the rest of the doors. AIUI
GPS is only used to trigger the announcements on SWT.

SN's units do use GPS (and CSDE) so their Electrostar doors are enabled as
soon as they come to a halt.

Paul S