FILE - In this May 12, 2015, file photo, emergency personnel work the scene of a deadly train wreck in Philadelphia. An Amtrak train headed to New York City derailed and crashed in Philadelphia. Federal authorities continue to investigate the crash that killed eight people and injured more than 200. The train derailed while traveling more than twice the speed limit around a curve; travel along the Northeast Corridor was disrupted for days while the tracks were replaced. (AP Photo/ Joseph Kaczmarek, File)

Amtrak 188 derailment

(Map via NBC10)

Was Amtrak 188 speeding?

Amtrak 188 should have slowed from about 65 mph to 50 mph before entering the curve where it derailed. Federal investigators are exploring whether that happened.

3 years ago