On 04/12/2013 22:34, Richard J. wrote:
Recliner wrote on 04 December 2013 20:27:55
...
John Levine wrote:
They won't have less than one member of staff on a train, so no savings
there.

Hmmn. What does the Paris Metro know that TfL doesn't?

How to build tunnels with walkways?

I think only line 14 in Paris has walkways, but generally all Paris
Métro tunnels are double-track, except for a few short lenths of
single-track tunnel. This means that it's easy to gain access to a
failed train by ladders/steps from the adjacent track, or by driving a
train on that track, stopping opposite the failed train, and using
boards to bridge the gap between the trains.


The Lille Metro also has walkways. I was on a train there that broke
down, and somebody came along after about 5 minutes, having gained
access to the train between the walkways.