Amtrak train that derailed was going just under speed limit

Amtrak Train Derails

JOPLIN, Mont. (AP) — An Amtrak train that derailed in rural Montana over the weekend was going just under the speed limit at about 75 mph (121 kph) when it went off the track along a gradual curve, killing three people and possibly ejecting passengers, federal investigators said Monday.

Investigators do not know the cause of the accident, but they are studying video from the train and another locomotive that went over the same track a little over an hour earlier, National Transportation Safety Board Vice Chairman Bruce Landsberg said.