"chunky munky" wrote in message
oups.com...
On Jun 14, 1:56 pm, "Paul Scott"
wrote:
"chunky munky" wrote in message

oups.com...



On Jun 14, 1:34 pm, "Paul Scott"
wrote:
What might have happened here then - have the BBC described the
incident
correctly, or were the brakes applied by the operation of the
tripcock?
Surely the Camden town junctions don't allow trains in opposite
directions
to meet, thats the whole point of all the branch tunnels...

http://news.bbc.co.uk/1/hi/england/london/6751809.stm

Paul

The Service (Line) Controller made a Code Red to the trains in the
area.

It was a re-numbering of trains that didn't quite go to plan.

Presumably a 'Code Red' is an emergency stop. Does a 'renumbering'
include
trains reversing short of original destination or something? Was this
as
scary as the BBC suggest then, or was it protected by the signalling
system?

Paul


Sorry I didn't explain it properly. A Code Red is for all trains to
stop immediatly.
The signalling system did not prevent this from happening.
The re-numbering involved the train still heading in the same
direction, but to a different destination, as part of a re-numbering
with another train (that also had its number and destination changed)


From RAIB web site:

"At approx 17:35 hrs a northbound Northern Line train was incorrectly
signalled into the High Barnet platform at Camden Town when it was scheduled
to go to Edgware. To minimise passenger delay the following High Barnet
train was signalled into the Edgware platform, and arrangements were made to
exchange passengers and crews between the two trains. When the train in the
High Barnet platform was ready to depart it set off in a southerly direction
for a short distance; the driver saw the lights of the next northbound
train, which was standing at a signal, and stopped the train."

A nice clear explanation for the layman

Paul S