Dozens of people were injured two trolleys bumped into each other Thursday at a Massachusetts Bay Transportation Authority station in Boston. Two Green Line trolleys collided at the Boylston Street Station at 11:50 a.m. "People went flying, got their knees banked up. It was pretty hectic," one rider said. EMTs set up a triage area outside the station, and 37 people were taken to local hospitals. "One trolley bumped into the rear of another trolley that was making a regular stop at the station," MBTA spokesman Joe Pesaturo said. "It was moving at a very low rate of speed when it happened."