On Jun 27, 5:49 pm, Tom Anderson wrote:
On Wed, 27 Jun 2007, Kev wrote:
On Jun 27, 11:18 am, John B wrote:
On Jun 27, 10:07 am, Kev wrote:

So why are there signal failures on the less than 10 years old Jubilee
Line extenstion or the less than 30 year old Jubilee Line or the less
than 50 years old Victoria Line.

Scientifically speaking, when you're talking about complex
electromechanical systems like train signalling, 30 years and 50 years
is Pretty Damn Old.

I notice that you didn't mention the less than 10 year old Jubilee Line
extension.

Oh, that's still being settled in!

tom



This reminds me of the early 1990s when slam-door suburban stock on
the South Eastern was replaced by class 465 "Networkers". The excuses
changed seamlessly from the trains being old to the trains being new.