On Tue, 14 Aug 2007 23:14:06 +0100, somersetchris wrote:

I still think that the best thing they could do is extend the ELL to
Finsbury Park and then in the future extend it to Highgate/Muswell
Hill/Ally Pally. One bit at a time.-

What's your solution to the flat-junction-with-NLL-in-steep-cutting-
with-houses-on-both-sides-hence-no-room-for-flyover problem, then?

There will be a flat junction at Dalston which will have the lines from
Stratford and the ELL meeting. There will also be a flat junction so
both of these lines can access both number 1 and 2 lines through
Highbury & Islington. So that is where the flat junction will be
anyway, so why not use it and then send the trains via Canonbury tunnel
to Finsbury Park?

Because with the planned routes there would only be conflicts between
westbound NLL and eastbound ELL trains, whereas your idea would add
conflicts between westbound ELL and eastbound NLL trains.

Still, perhaps it could be modified so that there is a diveunder there
from the ELL to the number 1 lines? If the number 1 lines only connect
to the ELL (except for a flat junction with the number 2 lines further
west), there would be no need to widen the formation.