On Mon, 12 May 2014 21:38:23 -0700, Aurora wrote:

On Mon, 12 May 2014 20:46:29 +0100, "Graham Harrison"
wrote:


"Christopher A. Lee" wrote in message
. ..
On Mon, 12 May 2014 11:55:25 +0100, Roland Perry
wrote:

In message , at 03:18:36 on
Mon, 12 May 2014, Christopher A. Lee remarked:
http://www.bbc.co.uk/news/uk-england-london-27361455

What do they mean by "tracks moved"?

Points set wrongly?

Points moved under the train?

Landlide moved the track?

Gradual drift, I expect.

Possibly - but with the intensive service, drivers must have noticed
trains passing unusually closely a long time ago.

Why? Given the intensive service drivers will have all sorts of shifts.
The chance that the same driver will pass another train at that exact point
often enough to think "here's a pattern" would surely be remote. Indeed,
it wouldn't surprise me if depot staff have repaired a few scuffs which
might now be put down to that track problem (but were they really?).

Is the Wimbleware Service especially intensive?

You'll probably get the correct answer somewhere in tfl.gov.uk but it
does seem a bit leisurely at times even in the evening rush hour.

Of course it is
entirely possible that the train operators' shifts include turns on
other routes.

The S7 stock is some of the widest to ever operate in the UK. When
Network Rail, or their predecessors, has operated stock with new
kinetic envelope characteristics they have been known to cobble
together a gauging vehicle and move it over the intended routes taking
measurements. Is it within TfL's wit to carry out such an exercise?