wrote:
On Sun, 01 Jun 2014 18:07:08 +0100
Paul Corfield wrote:
performance characteristics. It will also have to allow TOC trains to
run between LU ones (Chiltern) and also cope with SWT's running rights

I'd forgotten about the chiltern trains. Presumably then lineside signals
will have to remain in place?

And its not just them, the Met shares the uxbridge branch with the piccadilly
which I'm guessing won't be done until new trains for that line turn up and
when they do they'll have to use the same system I suppose.

The Picc also shares tracks with the District line, so in due course it
will need to use the same signalling system.

Even accepting that the S Stock should be pretty uniform when it comes
to its performance characteristics the network itself is very complex
as is the service pattern.

I wonder if its worth the pain in that case? Why not just go for moving
block signalling which will probably achieve most of the extra throughput
they're looking for and leave it at that?

Isn't this a form of moving block signalling? The trains will be more
frequent, with smaller gaps between them.