"JDikseun" wrote in message
om...
Paul Weaver wrote in message
...

What about a limited service using just one track?

Nice question, Paul, you're using your cdf
(common dog f..., er, common sense).
The standard answer they always give me
is that signals won't allow it - signals aren't
set up to protect trains operating this way.

Since there would only be one train on each open section, and each open
section would be separated by several miles from the next open section on
the same track, signals wouldn't be needed. So long as the last section at
the end of the line operated on the correct line towards the terminus (and
wrong line away from it), and the tripcocks were operating here, and each
train had a driver in each end, I don't see many safety problems... although
any sections with speed-operated trainstops (whatever they are called), such
as the southbound into Archway, would need to have tripcocks operational as
well.

Trying to get a trainload of drunks and potheads from one platform to the
opposite platform quickly might be more of a challenge. Fitting hoppers in
the floors of trains and using stations like St Pauls where one track is
directly above the other might do the trick.

--
John Rowland - Spamtrapped
Transport Plans for the London Area, updated 2001
http://www.geocities.com/Athens/Acro...69/tpftla.html
A man's vehicle is a symbol of his manhood.
That's why my vehicle's the Piccadilly Line -
It's the size of a county and it comes every two and a half minutes