"Annabel Smyth" wrote in message
...
This isn't Crossrail, as such, but we have often wondered why there is
no direct rail link between Brixton and Streatham, but one has to change
at Herne Hill. Physically, it would be possible for one train to do
that journey - why don't they?
--
Annabel Smyth
http://www.amsmyth.demon.co.uk/index.html
Website updated 8 March 2004

Because those two stations are on different routes. The rail network is made
up of routes, most of which go to and from terminals such as Victoria,
London Bridge, Blackfriars etc. It's already a complex network, and the more
routes there are the less frequently they can run. You cannot expect a
direct route from every station to every other station.