Amtrak announced May 26 it will install inward-looking cameras on the locomotives used on its Northeast Corridor trains, following the May 12 derailment near Philadelphia, its aftermath shown here.

NTSB Sets Meeting on 2015 Amtrak Crash

The key question is why the passenger train that derailed near Philadephia on May 12, 2015, was traveling 102 mph at the time on a curved section of track where speed is restricted to 50 mph.

The National Transportation Safety Board's members are meeting May 17 to determine the probable cause of the May 12, 2015, crash of Amtrak's Northeast Regional train near Philadelphia. The northbound train derailed at 9:21 p.m. while en route from Washington, D.C., to New York City, along Amtrak's Northeast Corridor, after entering a curved section of track at 106 mph even though the speed on that section is restricted to 50 mph.

The locomotive and all seven passenger cars derailed; eight passengers died in the crash and more than 200 others were hurt.

The meeting is set to begin at 9:30 a.m. in the board room at NTSB's headquarters in Washington.

It will be available as a live webcast, and a link to the webcast will be available on this page shortly before the start of the meeting: http://ntsb.capitolconnection.org/

Authorities investigated some damage to the windshield of the train that might have been caused by a projectile. Officials also said the crash might have been prevented by Positive Train Control.

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