The National Transportation Safety Board has released additional factual information regarding the on-going investigation of the derailment of Amtrak train number 350 on Sunday, Oct. 21, in Niles. According to the NTSB:

• The train had a green signal allowing it to proceed at maximum speed.

• A switch leading off the main track just beyond the signal was reversed — aligning the train into a rail yard instead of the main track it was on.

• A derailing device was installed between the yard track and the main track as a protective measure to derail cars that might accidently roll out of the yard before they reached the main track.

• The passenger train dislodged the derailing device but did not derail at that point.

• The train derailed about 290 feet beyond the switch.

• The train continued on the yard track and stopped with all cars upright.

• Empty ballast hopper cars were stored on the yard track, and the passenger train came to a stop 21 feet from the nearest hopper car.