Train at Chicago’s O’Hare airport tripped emergency brake before crash

(Reuters) – A passenger train that slammed through its end-of-the-line barrier at Chicago's O'Hare International Airport this week tripped an automatic emergency stop system and was not speeding when it entered the station, a federal investigator said on Tuesday. The crash sent the Chicago Transit Authority train hurtling onto an escalator and stairs at the airport's mass transit station early on Monday. Investigators hope to interview the train operator on Tuesday afternoon and have not reached any conclusions about the cause of the crash, Ted Turpin, an investigator with the National Transportation Safety Board, told reporters. The NTSB hopes to release the train on Tuesday to the CTA, which will be responsible for clearing the tracks, Turpin said.