Shuttle buses replaced trolleys along parts of three branches of the MBTA's Green Line on Monday morning. MBTA officials said the disruption was caused by a power issue at Kenmore Square at some ...

A train on the MBTA's Green Line collided with an out-of-service train at a station in Somerville early Sunday morning.

An MBTA Green Line train carrying passengers hit an out-of-service train at a station in Somerville, Massachusetts, early ...