Trolley Tunnel.
Massachusetts Bay Transportation Authority (MBTA) Type 7 LRV no. 3636 (Kinki Sharyo, 1986-1988) is the lead unit on a two-car Green Line train arriving at Hynes Convention Center Station while operating a D Branch service to Riverside.
The MBTA is very dear to me. The first trains I ever rode as a toddle to teenager were those of the "T" Here is a collection of MBTA Subway and trolley I have found on RP from the 60's thru today.