Once the train gets tangled up in the catenary, it'll pull the supports down.
That's what I was thinking. It's amazing to me that the catenary has the tensile strength to pull a pole over like that. Those are some pretty stout I beams.Once the train gets tangled up in the catenary, it'll pull the supports down.
I would guess that that leftmost catenary support was hit by the locomotive or one of the leading cars when it initially derailed. The last two cars, which are in line with the track, derailed but they'd been slowed by the impact and so stayed roughly on the line of the track past the initial point of derailment.
There are many tracks in the area. The North East Corridor on which the train was running is owned and managed by Amtrak. The yard where the locomotive is sitting is owned and managed by Conrail Shared Asset as is the Delair Bridge Line which passes over the yard after branching off from the NEC at Shore interlocking.Does anyone know who owns and manages the track in this area?
Good point.Do not discount the effect of the stout crossbeams that connect the left and right posts in each pair. If the right post gets knocked out the left post will be deformed significantly by the connecting crossbeam.
Not at all, because once that can of worms is open it can't be turned back.Is there anyone who's questioning the safety of the train with no seatbelts? Six have died so far today in a derailment in Philadelphia. Many traumatic injuries. How are trains exempt from seatbelt requirement?
Please check the definition of the word "casualty"....it is NOT limited to deaths only...it also means injuries. It has been misused all night and all morning long by the news media and other.Comparing past accidents that have been investigated by officials and ongoing accident scenes is like comparing apples to apple seeds. You can't draw any meaningful conclusions that way...
I will say that bad as this looks (and no doubt will get as the night winds on) it could have been much worse. Amtrak's worst accident in at least 15 years and over 90% survived, less than half seriously injured. Oftentimes transportation accidents result with 100% casualties.
edit for clarity, jis.
The near side (south) catenary support was sheared off at the base by the impact. It was displaced east multiple feet. Although it is closer to vertical, it is simply sitting on the ground, not its foundation. The north support was pulled over by the force coming through the frame from the south-side impact. It is still attached to the foundation although the pole, and likely the foundation as well, are badly rotated and deflected. Although the aerial makes it look like the north pole is more severely damaged, the south pole actually took the worst of it and brought the north pole along for the ride.Good point.Do not discount the effect of the stout crossbeams that connect the left and right posts in each pair. If the right post gets knocked out the left post will be deformed significantly by the connecting crossbeam.
Here's a zoomed in view - it looks to me like the left (inside the curve) post is significantly further from vertical than the right (outside the curve) post.
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I should really just take my own advice and shut up until there's more info though.