On Sat, 15 Jan 2005 09:32:36 +0000, Paul Corfield
wrote:


There are also track and signal related problems there. There are also
issues with the tunnel lining. This is a long standing issue and goes
back years. There is a big piece of work going on at the moment and a
substantive fix is to implemented soon to get rid of the restrictions
and risk of signal failures. A lot of this goes back to how the line
was constructed.

--
Paul C

Whilst we're on this section of Northern Line, could abyone please
tell me why, between Angel & Old Street the train seems to traverse
over a hollow sounding section of trackbed, making a noise similar to
traversing a viaduct or girder bridge.

Is there something below the tunnel lining to generate such a hollow
sound?

Nigel