On Fri, 15 Jun 2007 13:39:16 +0100, Tom Anderson
wrote:

On Fri, 15 Jun 2007, Roland Perry wrote:

In message .com, at
04:42:05 on Fri, 15 Jun 2007, Kev remarked:

It seems odd that on reaching the HB platform he didn't think to turn
back on the direction he had headed from the train in the Edgware
platfom. How many times had this driver driven a train through Camden.

Isn't it simpler than that?

1) The drivers switched trains, and unless they both left them in some
nondirectional state with red lights at both ends, the new driver would have
had to reverse the trains "direction" in that respect.

2) The driver's end of the platforms have either CCTV monitors or large
mirrors. These are very easy to recognise.

Plus, the guy is a Northern line driver, and so presumably knows the whole
thing like the back of his hand. Any explanation which involves him not
being sure where he was strikes me as highly dubious.

I conclude that the driver thought he had been told to reverse.

Is that possible? Is there a crossover he could have been heading for? Our
survey (of Tubeprune's Northern line signalling diagrams):

http://www.trainweb.org/tubeprune/Ca...wn-lct5-10.gif

Says yes - there's one just north of Mornington Crescent; does that fit
with the description of the incident?

If it was a shunting move to get him onto the correct route, this
wouldn't be necessary.

Both trains would have to reverse through the junction and wait for
the correct routes.

But the story is the were taking the simpler option. to swap the crew
and passengers between each train.

After which they would both have continues each others' journeys.