Clive D. W. Feather wrote:
In article , Dave Arquati
writes
The current service pattern fails at Camden when a train from either
southern branch destined for a particular northern branch reaches the
junction at the same time as a train from the other southern branch,
destined for the same northern branch - one of the trains must wait
and blocks trains behind it (destined for the other branch).

Not quite: I *think* that the junctions on the Charing Cross branch
are far enough south that a train can stand between the divergence
and the convergence with the Bank branch. Thus if you have one for
Edgware on each route, you let the Bank one in and hold the CX one; a
following CX-Barnet train can then run. Similarly in the southbound
direction.

The diagrams at http://www.geocities.com/athens/acro...9/ltcamden.jpg
and http://www.geocities.com/athens/acro...camdenjunc.gif don't
prove you're right, but they do prove you haven't got it the wrong way
around!