On 29/09/2010 20:23, Clive D. W. Feather wrote:
In message , "
wrote:
Of course where we share with BR then their signalling practices are
in force.
Only when it's their track.
Where do tube or sub-surface trains run that is strictly NR territory?

Queen's Park Junction to Harrow and Wealdstone.
Gunnersbury to Richmond.

There *are* true LU three- and four-aspect signals on the Metropolitan
Line north of Harrow-on-the-Hill.
I thought those would be NR signals. I notice that they still have the
separate stop arms for LU stock and AWS for NR stock.

Nope, they're LU. It's LU track.

Are you sure about AWS? I thought that all stock running on that line
had to be fitted with tripcocks.

I don't know about tripcocks, but I'm pretty certain that I have seen
AWS inductors on between Amersham and Harrow-on-the-Hill.

I know that North London Line's 378s are not fitted with tripcocks for
the Gunnersbury-Richmond section, and I am also quite certain that I
have seen AWS inductors there.

Trains on the Northern City Line into Moorgate appear to be fitted with
tripcocks, however -- at least the stop arms/policemen are still working
as trains enter the station.

Are there any plans for that line, BTW? Will it remain under FCC or will
TfL eventually get its hands on it again?