Meanwhile, rail industry lobbyists, who have been spreading money around to the right politicians for over a decade, anticipated this exact move. Since 2001, the industry contributed nearly half a million dollars to Bill Shuster, the Republican chair of the House Transportation Committee, who shepherded the bill through Congress this week, according to the Washington Post.

After Tuesday's vote to extend the deadline, Edward Hamberger, the president and CEO of the American Railroad Association, which lobbies on behalf of the industry in Washington, DC, applauded Congress for agreeing to their request for a delay. "The extension means freight and passenger railroads can continue moving forward with the ongoing development, installation, real-world testing and validation of this complex technology," Hamberger said in a statement. According to the train lobby, "substantial progress" on installing positive train control has been made. As of 2015, 31 percent of locomotives have the technology installed and over $5 billion have been spent.

But California Senator Dianne Feinstein said the foot-dragging needed to stop with so many lives on the line. "Current law states railroads must fully install PTC by the end of this year," Feinstein said Wednesday. "For a variety of reasons, we all know this is not feasible for all railroads. But we can't let this drag on indefinitely. It's a matter of public safety. We must get this done."

Last May, an Amtrak train traveling the Northeast Corridor between Washington, DC and New York City derailed after allegedly hitting curve designed for 50 mph speeds, traveling at over 100 mph. Eight people died and over 200 were injured, 11 critically. Two years prior, a Metro North train barreling into a sharp curve at nearly three times the required speed crashed, killing four and injuring 60. Investigators and experts believe both accidents could have been prevented by the installation of positive train control.