By Ian Simpson WASHINGTON (Reuters) - The engineer involved in a deadly Amtrak passenger train crash in 2015 that killed eight passengers in Philadelphia was distracted by radio traffic, U.S. safety officials said on Tuesday. The engineer of Amtrak Train 188, Brandon Bostian, sped up into a curve at more than twice the recommended speed, which could have been prevented if the track had been fitted with positive train control, a safety system, the findings of the National Transportation Safety Board (NTSB) said. NTSB Chairman Christopher Hart said that Bostian had lost track of where the train was before the crash that killed eight passengers and sent 186 to hospitals.
