On Wed, 25 Apr 2012 02:43:42 -0700 (PDT)
Patrickov wrote:
"Being the first doesn't prevent up upgrading the infrastructure on a
timely basis" -- I am afraid it does, especially with the complex
branching on the subsurface lines. Just wonder if the new trains are
capable for running on multiple signalling systems simultaneously. If

AFAIK there are no plans for a new type of signalling on the sub surface lines
so they could easily have fixed what was there first then bought new trains.
The northern line got new trains 15 years ago but the service didn't improve
because the signalling was as unreliable as ever. So what exactly did that
achieve? Other than spending millions.

it's so then I think new trains are somewhat essential before you can
upgrade signalling. Otherwise it'd be closing down the whole line,

That never stopped them closing down the victoria line every other weekend
when they installed the new signalling for the new trains there. Which are
less reliable than the old ones. Another lot of money well spent.

B2003