The above image depicts a MBTA green line trolley at an above ground T stop.
The Backbone of the MBTA System
The MBTA rapid transit network consists of the Red Line, Blue Line, Orange Line, Green Line, and Mattapan High Speed Line. Carrying almost 780,000 passengers on an average weekday, Rapid Transit serves 60% of the total MBTA daily ridership.
Rapid Transit State of the System Report
State of the Service: Red Line