Chicago Commuter Trains Collide, Dozens Injured

Two "El" trains crashed at the Harlem stop on the CTA's blue line track.
0:57 | 09/30/13

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Transcript for Chicago Commuter Trains Collide, Dozens Injured
Commuters in the Blue Line -- Chicago were screaming stopped just before they were hit by another. Eastbound train a witness says the train blew through a signal at least forty people -- to -- hospital none of those injuries are sort of like threatening. Every car appears. Today what we call -- -- are. Six point four think -- It's a great indication of the care we view our poll consulting and other training or not your little real. -- -- -- The -- mean if there is a -- -- -- -- -- -- go to break within seconds. If they do go to break the automatic train control of the war and trees -- was -- So there are a lot of unanswered questions now to exactly what hit it does appear that this was -- I'm getting reports from his original criminal activity. But the million dollar question story.

This transcript has been automatically generated and may not be 100% accurate.

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