Cats

On Jul 17, 1:15 pm, "Peter Masson" <peter.mass...@> wrote:
<snip>
> > Finally, the Metropolitan Line from Finchley Road to Harrow-on-the-Hill
> > is arranged UF, US, DS, DF, UM, DM. The Marylebone pair are to one side
> > for obvious reasons, but I'm not clear why they put the slows inside the
> > fasts.
>
> It has the advantage that Jubilee Line trains can be turned back at
> Willesden Green or Wembley Park by running them into a reversing siding
> between the Down and Up Slows (compare Welwyn Garden City, where a flyover
> had to be built to take terminating trains from the bay platforms on the
> Down Side to the Up Slow).

I'm sure the arrangement predates the Jubilee line by many years,
though if I remember correctly that's a renaming of part of the
Bakerloo line.