"Boltar" wrote in message
oups.com...
I thought the signalling had been upgraded twice already? Wonder if
the max performance really is so much greater or its just manufacturers
spiel. If the jubilee and northen line trains could even get close to
the
performance of the central line trains it would be a good thing IMO.

B2003


IIRC correctly one of the biggest cost overruns on the extension was caused
by reversion to normal signalling after they couldn't get the moving block
stuff to work? That was probably 'spun' as an upgrade...

Paul