On Wed, 24 Jun 2020 16:54:45 +0100
"Clive D.W. Feather" wrote:
In article , writes
Don't know if this has already been posted:

https://www.dailymail.co.uk/news/art...aunched-commut
er
-train-going-wrong-way-London-Tube-line-nearly-crashes.html

How on earth can this happen?

Possibilities based on what I can see:

(1) Met train is heading for Chesham, the points are therefore set to
cross over, and the Chiltern train SPADed.

(2) Previous train through the area was a Met train to Chesham, the
points haven't been moved since, and the Chiltern train SPADed.

Does that part of the Met still have tripcocks and if so surely they would
have prevented these 2 possibilities?