Federal investigators will focus on whether a CTA train operator fell asleep at the controls and if an automatic braking system was working properly as they seek to pinpoint the cause of a spectacular crash Monday that left a Blue Line car perched atop an escalator.
The operator may have fallen asleep shortly before her train smashed through a “bumping post” at the end of the track at O'Hare International Airport just before 3 a.m., according to a transit union representative.
The CTA employee, whose name has not been released, said after the crash that she was tired, said Robert Kelly, president of Amalgamated Transit Union Local 308.
“I can confirm...
A Blue Line train sits on top of an escalator at O'Hare International Airport on March 24, 2014, after it derailed and overran the platform.