heightened interest in positive train controls, high-tech systems using signals capable of detecting problems, slowing trains, even bringing them to a stop. congress mandated the systems by the end of 2015. all right. so, wolf, just last hour, when you were speaking to ntsb board member weener, he told me something that was not in the press meeting, that the train was going 60 miles per hour two minutes before the crash, also going 60 miles an hour before it approached that curve. that shows that perhaps this train was accelerating instead of slowing down. as we know the curve speed limit was 30 miles an hour, so acceleratic from 60 to 82 miles an hour and shouldn t have been going more than 30. now they have to figure out whether it was a mechanical problem or whether it was a human error. they haven t come to that conclusion yet. rene, thanks very much.
air-drop orders at your door using drones? what could go wrong? experts tell us, a lot. i m wolf blitzer, you re in the situation room. federal authorities now confirm that a new york commuter train was going way too fast just before it hurdled arou hur around the curve. it was barreling down the track at 82 miles an hour into a 30-mile-an-hour curve. the question now was human error or mechanical problem to blame? with the crash that killed four people and injured dozens. cnn s rene marsh is following the story. what s the latest? we now know the ntsb have already started interviewing one of the engineers from that train. we also know, based on preliminary data from the train s event recorders, we now know how fast this train was