On 05/02/2011 18:14, Paul Corfield wrote:

On the Met I would imagine Chiltern trains will have to carry equipment
that allows them to interface with the new signalling system that is
eventually installed on the sub surface lines. I am sure this must have
discussed and resolved to allow the sub surface signalling contract to
be tendered.

From Chiltern's point of view, the ideal situation would surely be for
whatever was chosen to be compatible with the ATP equipment (or even
tripcocks) fitted to the 165/0s and 168s, even if it only provides
partial supervision...or at least designed in such a way that it'd be
easy to make a magic box to "translate" the SSR signalling information
into a form that the ATP kit can understand, whilst still being able to
be used between Marylebone and Aynho in the normal way.

Cheers,

Barry