Utredare: För hög hastighet bakom tågolyckan

On May 12, 2015, an Amtrak Northeast Regional train from Washington, D.C. bound for New York City derailed and crashed on the Northeast Corridor in the Port Richmond neighborhood of Philadelphia, Pennsylvania. Of 238 passengers and 5 crew on board, 8 were killed and over 200 injured, 11 critically. The train was traveling at 102 mph (164 km/h) in a 50 mph (80 km/h) zone of curved tracks when it derailed. Some of the passengers had to be extricated from the crashed cars. Many of the passengers and local residents helped first responders during the rescue operation. Five local hospitals treated the injured. The derailment disrupted train service for several days. Federal authorities from the National Transportation Safety Board (NTSB) believe that the derailment was most likely accidental, and are investigating minor damage to the windshield of the train which may have been caused by a projectile, but did not penetrate the glass. Officials said the incident might have been prevented by PTC (Positive Train Control), a computerized speed-limiting system that was operational elsewhere on the Northeast Corridor, but whose activation at the crash site had been delayed due to regulatory requirements. The track in question was not equipped with ATC (Automatic Train Control), which had been operational for years on the southbound track of the curve at which the derailment occurred, and which also would have limited the train's speed entering the curve. Shortly after the derailment, Amtrak completed ATC installation on the northbound track. A 1943 train derailment on the same curved section of tracks killed 79 and injured 117. The 2015 crash was the deadliest on the Northeast Corridor since 1987, when 16 people died in a crash near Baltimore.