The preliminary NTSB review of the event recorder data indicated that the Green Line trolley that crashed into another one in front of it was going 30 mph in a 10 mph zone.
The preliminary NTSB review of the event recorder data indicated that the Green Line trolley that crashed into another one in front of it was going 30 mph in a 10 mph zone.
WBZ-TV's Lisa Gresci reports.