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    Could RAIB's reliance on the On-Train Monitoring Recorder (OTMR) data for the impact speed be wrong?

    Moderator note: Split from https://www.railforums.co.uk/threads/report-of-collision-bedford-elstow-19-06-26.303537/ I think the estimated collision speed of 49mph needs to be taken with a pinch of salt, Euro NCAP tests cars at 40mph into a semi deformable barrier and they lose 10-20% of their...
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    How could self driving vehicles effect future rail growth?

    Mods note - split from this thread https://www.railforums.co.uk/threads/restarting-hs2a.270436/ Latter sentence is to a degree why the former is true. The fact that we expect every line to be an economic net positive means that we are stuck doing similar things to what we have already done...
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    Buffer Stops - Costs

    Pretty simple question (I have searched), what is the approximate cost of a set of friction buffer stops like the ones shown here? https://www.oleo.co.uk/products/buffer-stops/sliding-friction-buffer-stop And then the approximate cost of the hydraulic buffers on their own without the...
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    My idea for electric planes instead of high speed rail

    Here is where it falls down: No creativity in terms of looking at broader developments, it simply assumes that high speed rail is needed, not entirely surprising given who wrote it. Here is the actual answer: This is a 5 seat variant but enlarge such a thing to 20 seats and ranges of...

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