MBTA investigating 'possible human factors'

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.
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.
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.
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.
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.
Dozens walk out of Green Line tunnel after ‘collision’ between trolleys
Dozens of MBTA passengers were forced to walk their way out of a Green Line tunnel as part of their evening commute on Wednesday night, after a pair of trains collided and stuck together — sort of. About 100 passengers were forced to debark and leave the train on foot when one Green Line trolley apparently rolled backward into another around 7:30 p.
WCVB Channel 5 Boston10d
NTSB publishes preliminary report on MBTA Green Line crash at East Somerville Station
MIKE MARIA THE NTSB FIRST RECOMMENDED THAT THE MBTA INSTALL A SYSTEM THAT PREVENTS COLLISIONS ON THE GREEN LINE. NEARLY 20 YEARS ... to prevent a problem. Full statement from the MBTA:The ...
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MBTA says new Green Line safety system could be in place this year
In the wake of a recent crash between two trolleys, MBTA board members on ... a team to investigate a crash on the Green Line in less than six months. The full price of the Green Line ...
WBUR11d
NTSB: Green Line trolley went through stop sign before crash
the MBTA has been laser-focused on improving safety at all levels and maintaining a strong emphasis on compliance with Green Line operating rules, including adherence to posted speed limits." ...