June 17th 16, 10:35 AM
posted to uk.transport.london,uk.railway
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First recorded activity at LondonBanter: Jul 2003
Posts: 1,715
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Paddington SPAD
On 17/06/2016 11:30, NY wrote:
"D A Stocks" wrote in message
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wrote in message
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In article ,
() wrote:
So is it the intention of these deliberate derailers, or catch points
as those of us not in the press know them, to cause the train to
smash into an overhead wire support with such force that it bends in
two? What would be the result if the driver, who was presumably in
the cab at the time, or passengers had been killed or seriously
injured as a result?
Is this another feature of the signalling design that gave us the
Ladbroke
Grove crash? Looks like stupidity piled on stupidity.
How many other London Terminal approaches have derailers to handle
SPADs?
I asked a similar question a year or two back in relation to a set of
catch points that regularly cause chaos at Brighton station - the last
time was 15 April 2015. There are a number of circumstances where trap
points will be provided, especially on the exits from yards or depots
(or other lines) where shunting takes place. A falling gradient to the
main line might be another candidate for trap points because TPWS
won't help if a train is running away due to brake failure.
I wonder about the sanity of siting catch points so they derail a train
into an OHLE mast. Derail the train into anything else - preferably
broadside-on into a platform edge so the friction slows the train down
fairly gently. Let it even foul the line that it is joining, as long as
the train isn't derailed into the path of an adjacent line. But hitting
an OHLE mast, with the loss of power to all electric trains, seems stupid.
Surely the point is to derail it away from the possibility of fouling a
running line that may be occupied?
--
Graeme Wall
This account not read.
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