Research commissioned by tall-speed project found that 360km/h proposed limit would cause significant instability issuesHS2,the contentious rail project that will offer a tall speed link from London to cities in the north of England, has been forced to deny claims that its trains are at serious risk of derailment when travelling at top speed. Research commissioned by HS2 and completed last year by Prof Peter Woodward is believed to occupy found that the speeds proposed would create “critical track velocity effects” and “significant issues” with track instability.
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Source: theguardian.com