Quote:
Originally Posted by kraznyi_oktjabr
Gentlemen, you seem to be making assumption which is not necesssarily true. That is that there was signal displaying danger aspect. In early 2000s in Savonia Railway in Finland between Kouvola and Mikkeli (don't remember exact spot) was incident where two passengers trains travelling in opposite directions had routes set and protected into same single tracked block with all main and distant signals displaying Proceed and Expect Proceed aspects.
Disaster was avoided only because one of train drivers remembered that there was supposed to be passing at loop and he should have had route set into loop track. Therefore distant signal should have had Expect 35 (proceed at maximum speed of 35 km/h, points ahead are set for diverging route) aspect instead of Expect Proceed.
This isn't very unlike scenario but still possible.
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Quote:
Originally Posted by Skybird
Media report that the investigating police now is very strongly focussed on human error made by a traffic regulator. All tracks seem to lead there.
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I presume by traffic regulator you mean what we in English would call a signalman or dispatcher? This would correlate with what krazyni put as well in that both trains got a clear aspect. One would have thought in this day and age that there would be something in the computing system that would have picked this up and flashed up a warning to the signalman that he was about to clear a train onto an occupied block.
Of course, it's possible that the signal itself was at fault and showed a clear aspect when it should have shown a danger, this is what caused the train crash at Clapham Junction back in 1989 because of rushed engineering work an old wire had not been isolated and as a result 35 people died and nearly 500 were injured.
Human error in the signalling department wouldn't surprise me though, there are plenty of crashes in history which can be traced to that,
the worst train crash in the UK was primarily down to signalling error, and it goes to show that despite all the computer back-ups we put into a system, it's still only as strong as its weakest point, which is invariably the fleshy thing operating it.