In article . com,
MIG wrote:
On Jun 17, 11:30 pm, "Clive D. W. Feather" c...@on-the-
train.demon.co.uk wrote:
Chesham surprises me. After all, Mill Hill East has a starter.

It must be pretty difficult for there to be a train in front in either
case (or for the train in the station to have got past it on the way
in). If there's one coming the other way, there's a bigger problem
than just the train in the station leaving.

It may have been left in place due to it's ability to regulate the
service; you don't want a train sitting just north of Finchley
Central for 15 minutes waiting for the time it is timetabled to
slot into the southbound service.

--
Shenanigans! Shenanigans! Best of 3!
-- Flash