Amtrak train that derailed was traveling twice speed limit-officials

By Jarrett Renshaw PHILADELPHIA (Reuters) - Federal investigators said on Wednesday that preliminary data showed an Amtrak train in Philadelphia was traveling at more than 100 miles per hour, or roughly twice the speed limit, when it derailed, killing seven people and injured more than 200. The National Transportation Safety Board's (NTSB) disclosure came as investigators pored over video footage and data from the black box aboard the train that crashed late Tuesday. Passenger rail service