On Wed, Oct 05, 2011 at 11:16:49AM +0100, BumYoghurt wrote:

Just a bit furious as to why they won't extend the London Overground to
Streatham- especially when no new track needs to be built. Crystal
Palace to Clapham Junction would join up Balham, Wandsworth and
Streatham Hill/Common and all would be well with the world.

You can't just extend it to Streatham Hill/Common, because there's no
facilities for turning trains around - no bay platform, and not enough
capacity to let them tie up a through line for a few minutes without
seriously screwing up all the other routes. Instead of terminating at
Streatham Common, they'd have to go through Norbury and Thornton Heath
to Selhurst and then reverse in the depot, or go through to West Croydon
(but the bay platform is already in use there for other services) or to
East Croydon (which also already has trains being reversed there.
Similar for Streatham Hill.

Not to mention that those trains would have to cross several more
junctions, and share track with several more services, all of which
serves to make a service less reliable.

--
David Cantrell | even more awesome than a panda-fur coat

comparative and superlative explained:

Huhn worse, worser, worsest, worsted, wasted