The only part of the T where trolleys actually mix with city traffic.
Boston Runs on Dunkin! A type 7 trolley arrives at BUSY Park Street Station. Dunkin Donuts stores are litterally steps from each other in Boston and on the T.
A Type 7 arrives in Park Street via the oldest Subway in the USA. Unique feature of Park Street on the inbound side is a track right in the middle of the platform you can walk across.
A Kinki Sharyo Type 7 has just passed a Type 9 in deluge. Boston as seen an unsual wet and unsettled summer this year. The 7's have been the most reliable trolley's since the PCC.