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...nched-commuter
-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.

This seems the most likely to me. They are reporting that a set of
points was damaged, which would have happened when the Chiltern train
trailed through them.

The LU trainstop would have been at the stop signal, which is (Google
satellite map) close to the facing turnout which sent the Chiltern
train onto the wrong line.

Because the line was equipped with trainstops, not AWS, the driver
would not have had a warning at the distant signal, but he was
probably slowing down for the station.

Christopher A. Lee wrote:
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...nched-commuter
-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.

This seems the most likely to me. They are reporting that a set of
points was damaged, which would have happened when the Chiltern train
trailed through them.

The LU trainstop would have been at the stop signal, which is (Google
satellite map) close to the facing turnout which sent the Chiltern
train onto the wrong line.

Because the line was equipped with trainstops, not AWS, the driver
would not have had a warning at the distant signal, but he was
probably slowing down for the station.


Yes, considering that the Chiltern train should already have been slowing
for the C&L station, I'm surprised it got so far after hitting the
trainstop. I suppose it's lucky it wasn't derailed when it ran through the
Chesham-set points.

On Wed, 24 Jun 2020 16:42:37 -0000 (UTC)
Recliner wrote:
wrote:
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?




Yes, it still has trip cocks. The new signalling hasn't got that far. So,
unlikely to be a SPaD.

Presumably Chiltern won't be paying for the met line train control system
to be fitted to their DMUs so I guess TfL will have to fork out for that
when the time comes. I wonder if its worth it given the trains on that
section arn't exactly frequent.

On Wed, 24 Jun 2020 16:42:37 -0000 (UTC)
Recliner wrote:
Clive D.W. Feather wrote:
In article , writes
Don't know if this has already been posted:


https://www.dailymail.co.uk/news/art...unched-commute
r
-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.

I think the Met train was eastbound, and the Chiltern train heading for
Amersham, but was wrongly put on the crossover to the eastbound line.
That's the route taken by Met trains to Chesham, and no Chiltern train
should normally go that way.

Anyone know if a Chiltern train has ever gone to Chesham for some special
run or other reason?

On Wed, 24 Jun 2020 10:43:25 +0000 (UTC), wrote:

Don't know if this has already been posted:

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

How on earth can this happen? Surely the chiltern driver knew what side of the
line he was on? And why didn't the tripcocks work or have they been removed
from that section of line now?

A lot of interesting history of the line at
http://www.metroland.org.uk/cheshamflyer/

Guy Gorton

Guy Gorton wrote:
On Wed, 24 Jun 2020 10:43:25 +0000 (UTC), wrote:

Don't know if this has already been posted:

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

How on earth can this happen? Surely the chiltern driver knew what side of the
line he was on? And why didn't the tripcocks work or have they been removed
from that section of line now?

A lot of interesting history of the line at
http://www.metroland.org.uk/cheshamflyer/


I think that, thanks to the misleading Tube map, a lot of people wrongly
think that Amersham is the most distant LU destination, when it's actually
Chesham.

On Thu, 25 Jun 2020 16:19:37 -0000 (UTC), Recliner
wrote:

Guy Gorton wrote:
On Wed, 24 Jun 2020 10:43:25 +0000 (UTC), wrote:

Don't know if this has already been posted:

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

How on earth can this happen? Surely the chiltern driver knew what side of the
line he was on? And why didn't the tripcocks work or have they been removed
from that section of line now?

A lot of interesting history of the line at
http://www.metroland.org.uk/cheshamflyer/


I think that, thanks to the misleading Tube map, a lot of people wrongly
think that Amersham is the most distant LU destination, when it's actually
Chesham.


Certainly since the Met stopped going to Aylesbury. (Change loco from
electric to steam at Rickmansworth).

Guy Gorton

On 25/06/2020 17:40, Guy Gorton wrote:
On Thu, 25 Jun 2020 16:19:37 -0000 (UTC), Recliner
wrote:

Guy Gorton wrote:
On Wed, 24 Jun 2020 10:43:25 +0000 (UTC), wrote:

Don't know if this has already been posted:

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

How on earth can this happen? Surely the chiltern driver knew what side of the
line he was on? And why didn't the tripcocks work or have they been removed
from that section of line now?

A lot of interesting history of the line at
http://www.metroland.org.uk/cheshamflyer/


I think that, thanks to the misleading Tube map, a lot of people wrongly
think that Amersham is the most distant LU destination, when it's actually
Chesham.


Certainly since the Met stopped going to Aylesbury. (Change loco from
electric to steam at Rickmansworth).

Guy Gorton


Which was well before the present majority were born !

I know it was probably only a threat, but how different it might be now
if the Chesham line had extended on to the LNWR.

PA

On Thu, 25 Jun 2020 18:28:36 +0100, Peter Able wrote:

On 25/06/2020 17:40, Guy Gorton wrote:
On Thu, 25 Jun 2020 16:19:37 -0000 (UTC), Recliner
wrote:

Guy Gorton wrote:
On Wed, 24 Jun 2020 10:43:25 +0000 (UTC), wrote:

Don't know if this has already been posted:

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

How on earth can this happen? Surely the chiltern driver knew what side of the
line he was on? And why didn't the tripcocks work or have they been removed
from that section of line now?

A lot of interesting history of the line at
http://www.metroland.org.uk/cheshamflyer/


I think that, thanks to the misleading Tube map, a lot of people wrongly
think that Amersham is the most distant LU destination, when it's actually
Chesham.


Certainly since the Met stopped going to Aylesbury. (Change loco from
electric to steam at Rickmansworth).

Guy Gorton


Which was well before the present majority were born !

I know it was probably only a threat, but how different it might be now
if the Chesham line had extended on to the LNWR.

PA

The first 4 slides I ever took with the camera my father-in-law threw
at me 'cos he couldn't work it were of the last electric to steam
handover in 1961.
Extending to the LNWR would have been quite a geographical challenge
with both lines being in steep sided valleys. Lots of higher ground
between.

Guy Gorton

Guy Gorton wrote:
On Thu, 25 Jun 2020 18:28:36 +0100, Peter Able wrote:

On 25/06/2020 17:40, Guy Gorton wrote:
On Thu, 25 Jun 2020 16:19:37 -0000 (UTC), Recliner
wrote:

Guy Gorton wrote:
On Wed, 24 Jun 2020 10:43:25 +0000 (UTC), wrote:

Don't know if this has already been posted:

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

How on earth can this happen? Surely the chiltern driver knew what side of the
line he was on? And why didn't the tripcocks work or have they been removed
from that section of line now?

A lot of interesting history of the line at
http://www.metroland.org.uk/cheshamflyer/


I think that, thanks to the misleading Tube map, a lot of people wrongly
think that Amersham is the most distant LU destination, when it's actually
Chesham.


Certainly since the Met stopped going to Aylesbury. (Change loco from
electric to steam at Rickmansworth).

Guy Gorton


Which was well before the present majority were born !

I know it was probably only a threat, but how different it might be now
if the Chesham line had extended on to the LNWR.

PA

The first 4 slides I ever took with the camera my father-in-law threw
at me 'cos he couldn't work it were of the last electric to steam
handover in 1961.
Extending to the LNWR would have been quite a geographical challenge
with both lines being in steep sided valleys. Lots of higher ground
between.

How long did the trains stop while the locos were swapped? Was it really
as little as four minutes?

It would probably take at least 20 today, if it were allowed at all. Can
you imagine them allowing the crew to be working on live fourth rail
tracks, with steam and dripping water all around?