"John Rowland" wrote in message ...
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.

Then you'd be using alternate northbound/sb sections, or (eb/wb).
Which would dramatically reduce the sections you could work on. Add to
this the arrangement of current sections, and there'd be even less
areas you could access to do maintenance.......Wouldn't that then put
us right back to: "Shut the whole line down so we can get some
maintenance done"?


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.

Chuckle.