Tube Trains Sent On Collision Course
"Alan Ben It" wrote in message
On Sep 10, 11:38 am, "Recliner" wrote:
wrote in message
On Fri, 10 Sep 2010 08:53:12 +0100
Roland Perry wrote:
In message , at
20:05:28 on Thu, 9 Sep 2010,
remarked:
You would have thought the signal allowing trains out of the bay
platform would be interlocked to the points being set correctly
for the route over the crossover, wouldn't you?
Even in the presence of a fault condition (which they've apparently
admitted)?
So much for signals being failsafe. Failsafe unless the failsafe
fails. Which it obviously did.
Surely it was still failsafe? No trains were signalled to collide
with each other.
Yes they were. One train was on the line working in the wrong
direction. Would you drive the wrong way on a motorway?
But would the signals have stayed green if the trains approached each
other closely enough to collide?
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