In message . com,
TheOneKEA writes

[*] There are some specific exceptions, such as Turnham Green
on the Piccadilly, and the signalling in these places is altered
accordingly.

In the case of Turnham Green, both lines do have home signals - the EB
line's homes are A631^A and A631^B, and the WB's are A630^A and A630^B.
Would the overlaps on these homes simply be longer than usual, to allow
a train to alternately stop or pass through at linespeed?

Yes. A Non-stopping Picc train doesn't have any speed restriction on
the fast lines through Turnham Green.

The normal 'rule' is 5 mph at a station starter. However, if we (the
Picc) are run down the local (District) line from Acton to Hammersmith,
we can pass the starters at 25 mph., so there must be some adjustments
of the overlaps there too.
--
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