Please READ MORE for the video. Test is not everything but many thing. This experiment is about controlled derailment of a freight train due to rail failure. It calls as shortly Sabotage. You can find out rail joint location type (Square (generally on alignment sections) or Staggered joint (generally on curve sections). We can say that bogies ensure alignment of wheels on track. Also wheel diameter is significant parameter for that kind of derailment. I have to say that Nadal and Weinstock criterions are about derailment (rail and wheel angles and their coefficient of friction and vertical and lateral forces etc.).
Some of railway sabotages in literature.
• 1905: 20th Century Limited derailment - Although unconfirmed, the evidence pointed heavily to malicious involvement in the derailment of the New York Central Railroad's crack passenger train, the 20th Century Limited, resulting in 21 deaths.
• 1951: Huntly rail bridge bombing – a rail bridge in Huntly, New Zealand, was blown up in order to disrupt coal supplies to a nearby power station, aiding the cause of striking workers.
• 1995: Palo Verde derailment – a train in Palo Verde, Arizona, was derailed by saboteurs shifting the rails out of position, causing one fatality. The case remains unsolved.
• 2002: Rafiganj train wreck – a train derailed on a bridge over a river in Bihar, India, killing at least 130 people.
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