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| Re: Interesting new development: Re: Major Amtrak derailment in Philly (1352134) | |||
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Re: Interesting new development: Re: Major Amtrak derailment in Philly |
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Posted by Fine, Howard, and Fine on Fri May 15 11:44:56 2015, in response to Interesting new development: Re: Major Amtrak derailment in Philly, posted by SelkirkTMO on Fri May 15 00:54:54 2015. Frankford Junction is the second of two major curves leaving Philly. After the two curves there's a nice straight shot.I think it's as simple as this: the engineer sped up after the first curve, instead of the second. Certainly the NTSB-released data regarding speed shows that the train began picking up considerable speed after the first curve. The signaling engineers knew that trains coming into philly from the NE, would have to slow down for these curves after the straight shot, and that's where the automatic features for speed protection were installed. That makes sense. Nobody ever considered that an engineer would speed up so much before the second curve. |
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