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[email protected] · July 8th 10, 10:08 PM posted to uk.transport.london

In article ,
(Martin Petrov) wrote:

Like what? Seriously, it would be in effect a combination of the
existing Wimbleware service with a truncated H&C service, switching at
Edgware Road, not a bad location for such a switch.

That's combining 2 lines which have to mesh with a ton of other
services all around the 'circle' (ie, merging with the Metropolitan
Line, Circle Line, District Line) at a bunch of flat junctions (is
there any grade separation anywhere?), which sounds easier said
than done to me.

Firstly, you'd have to assume that the existing timetable would
allow the services to run straight through - firstly, are there
exactly the same number of services on each line per hour? I doubt
it? The minute you add in another service on one of the stretches,
that's likely to have a knock on effect to the other lines, and
once you start messing around with those, they'll knock on
everywhere else, surely? And even if they're exactly the same
number of trains on each route, do they arrive and depart from
Edgware Road with a convenient 30 second between them? If not, that
would impact other services again.

Or do they mesh in perfectly?

I accept there could be layover time at Edgware Road but it can take that
easily enough with 4 platforms and the Circle the only other service. I
thought both Wimbleware and H&C services had the same number of trains per
hour but don't have access to a WTT to check.

--
Colin Rosenstiel