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zone. whether speed caused yesterday s derailment or contributed to it remains unknown. investigators say they re examining a number of possible factors. they will be looking at the operation, the track itself, the mechanics of the train, survival factors, human performance. looking at all of that simultaneously and trying to also get more information off the recorders. now the track, which had been used by freight trains for years had recently undergone a $181 million upgrade to enable high speed passenger service between seattle and portland. technology that can slow or stop a speeding train was not in use on this stretch of tracks and two weeks ago one local mayor predicted there would be fatalities with high speed trains traveling so close to traffic and pedestrians. amtrak said at this time we won t speculate about the cause and we encourage others not to speculate as well. people are going to want
the train is going to slow down coming into the station. one of the things i was noting was whether you go slower when you re in a city right? if you re on a part of track that s running through a crowded residential neighborhood than if you re sort of out in the middle of nowhere and on a big straightaway. yeah it can change based on some of those factors. a lot of it has to do with track geometry, whether there s a curve, whether the curve is super elevated whether or not there s crossings in the area there s a lot of different factors that go into how fast the train should be going. a lot of times, though it s not contingent on a station. it s more contingent on a track itself. that tracks are rated for a specific speed? that s correct. and in a case like what we have here we have track that ranges in speed from 25 to 30 miles an hour, all the way up in some areas to 80 or 100 miles an
so take me through the basics of how safety works in terms of speed. the train is going to slow down coming into the station. one of the things i was noting was whether you go slower when you re in a city, right? if you re on a part of track that s running through a crowded residential neighborhood than if you re sort of out in the middle of nowhere and on a big straightaway. yeah, it can change based on some of those factors. a lot of it has to do with track geometry, whether or not there s a curve, whether the curve is super elevated, whether or not there s crossings in the area, there s a lot of different factors that go into how fast the train should be going. a lot of times, though, it s not contingent on a station. it s more contingent on a track itself. and what that track can handle. and those tracks are rated for a specific speed? that s correct. and in a case like what we have here, we have track that ranges
if you re on a part of track that s running through a crowded residential neighborhood than if you re sort of out in the middle of nowhere and on a big straightaway. yeah, it can change based on some of those factors. a lot of it has to do with track geometry, whether there s a curve, whether the curve is super elevated, whether or not there s crossings in the area, there s a lot of different factors that go into how fast the train should be going. a lot of times, though, it s not contingent on a station. it s more contingent on a track itself. that tracks are rated for a specific speed? that s correct. and in a case like what we have here, we have track that ranges in speed from 25 to 30 miles an hour, all the way up in some areas to 80 or 100 miles an hour.
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