MBTA investigating 'possible human factors'

100 riders evacuated after MBTA Green Line trolley collides with another
No injuries were reported after a Green Line trolley rolled backward and “hitched” onto another trolley Wednesday, according to the MBTA.
MBTA investigating ‘possible human factors’ after Green Line trolley rolled back and ‘hitched’ with other train
About 100 riders on two other Green Line trains behind the trolleys involved in the incident were escorted about 250 feet to the nearest station, the MBTA said.
Investigation underway after MBTA Green Line trolley collides with another
An MBTA Green Line trolley parked at the Park Street station collided with another trolley behind it Wednesday evening, NewsCenter 5 has learned.
Riders evacuated after MBTA Green Line trolley collides with another, NewsCenter 5 has learned
An MBTA Green Line trolley parked at the Park Street station collided with another trolley behind it Wednesday evening, NewsCenter 5 has learned.
About 100 riders evacuated after Green Line trolley rolls backward, becomes ‘hitched’ to trolley at Park Street station
Shortly before 7:30, a stopped Green Line trolley at Park Street rolled backward and hitched to the trolley behind it, officials said.
100 MBTA passengers evacuated in Boston after trolley rolls back into another
The MBTA partially shut down service on the Green Line in Boston because a trolley rolled back into the trolley behind it at Park Street.
MBTA Green Line Service Halted After Trolleys Collide at Park Street, Passengers Evacuated
MBTA Green Line service was disrupted when two trolleys at Park Street station became hitched, causing evacuations but no injuries.
Green Line passengers evacuated after incident in Boston
The MBTA partially shut down service on the Green Line in Boston because a trolley rolled back into the trolley behind it at Park Street. WBZ-TV's Brandon Truitt reports.
Trains2h
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WBUR7d
NTSB: Green Line trolley went through stop sign before crash
The Green Line trolley that smashed into an out-of-service train, derailing both, in Somerville a month ago was going faster ...