Local News

The Green Line had the most derailments in the nation last year

An MBTA train on the D branch of the Green Line smashed into another train from behind in 2008, injuring multiple people and trapping a train operator in the wreckage. Dina Rudick / The Boston Globe

Seven Green Line trains derailed in 2015, the highest number of such accidents on light rail lines in the country, and part of a little-noticed string of safety problems on the MBTA that appear to have worsened in the past several years, state and federal records show.

Five Green Line trains have derailed so far this year, including one in the past month, according to a Globe review of federal and local statistics.

A spate of accidents in 2015 also led to a state audit that was quietly conducted last year. The audit, obtained by the Globe through a public records request and not previously reported, found that the Massachusetts Bay Transportation Authority was not adequately maintaining its tracks or the wheels on a type of Green Line car with a history of derailments.

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