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After MBTA Train Took Off Without A Conductor, Investigators Focus On Operator Error02:43

This article is more than 4 years old.

Investigators are still working to determine just what caused a train on the MBTA's Red Line to leave its station early Thursday without an operator.

WBUR's Fred Bever reports that operator error is the focus of their probe.

This segment aired on December 11, 2015.

Fred Thys Twitter Reporter
Fred Thys reported on politics and higher education for WBUR.


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