Despite Congress mandating all railroads be equipped with a Positive Train Control system by the end of the year, Chicago's Metra system isn't expected to reach that goal until 2019. Most commuter trains won't meet the deadline. M. Spencer Green/AP hide caption

itoggle caption M. Spencer Green/AP

Firefighters douse blazes after a freight train loaded with oil derailed in Lac-Mégantic in Canada's Quebec province on July 6, 2013, sparking explosions that engulfed about 30 buildings in fire. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images

Japanese Prime Minister Shinzo Abe speaks to reporters after inspecting a maglev train system at the Yamanashi Experiment Center in Tsuru Saturday. Japan is reportedly willing to send the technology to the U.S. without a fee. Kazuhiro Nogi/AP hide caption

itoggle caption Kazuhiro Nogi/AP