"In the wake of a 2008 commuter train collision that resulted in 25 fatalities, RSIA was enacted. It requires major freight railroads, Amtrak, and commuter railroads to install PTC on many major routes by the end of 2015. PTC implementation, overseen by FRA, is a complex endeavor that touches almost every aspect of train operations on major lines. According to FRA, 37 railroads are required to implement PTC. GAO was asked to examine the status of PTC implementation. This report discusses, among other things, railroads' implementation of PTC to date and the challenges, if any, to meeting the 2015 deadline. GAO interviewed representatives from Amtrak, the four largest freight railroads, and seven commuter railroads, selected to represent a mix of locations, ridership levels, and PTC implementation status. GAO also interviewed PTC experts and suppliers, and reviewed FRA's PTC regulatory impact analyses."
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