The Green Line is a semi-metro system run by the Massachusetts Bay Transportation Authority (MBTA) in the Boston, Massachusetts, metropolitan area. It is the oldest MBTA subway line, and with tunnel sections dating from 1897, the oldest subway in North America. It runs underground through downtown Boston, and on the surface into inner suburbs via six branches on radial boulevards and grade-separated alignments. With an average daily weekday ridership of 137,700 in 2019, it is the third-most heavily used light rail system in the country. The line was assigned the green color in 1967 during a systemwide rebranding because several branches pass through sections of the Emerald Necklace of Boston.
Porter station is a Massachusetts Bay Transportation Authority (MBTA) transit station in Cambridge, Massachusetts. It serves the Red Line rapid transit line, the MBTA Commuter Rail Fitchburg Line, and several MBTA bus lines. Located at Porter Square at the intersection of Massachusetts and Somerville Avenues, the station provides rapid transit access to northern Cambridge and the western portions of Somerville. Porter is 14 minutes from Park Street on the Red Line, and about 10 minutes from North Station on commuter rail trains. Several local MBTA bus routes also stop at the station.
Longwood Medical Area station is a light rail stop on the MBTA Green Line E branch, located in the Mission Hill neighborhood of Boston, Massachusetts. It is named for the adjacent Longwood Medical Area.
Northeastern University station is a surface-level trolley stop on the MBTA Green Line. It is located in a dedicated median along Huntington Avenue in Boston, between Opera Place and Forsyth Street, and is adjacent to the Krentzman Quad on the campus of Northeastern University. It is the first surface-level stop going outbound along the Green Line E branch; trolleys rise from a portal located between Opera Place and Gainsborough Street and continue along the surface down Huntington Avenue towards Mission Hill.
Boston College station is a light rail station on the MBTA Green Line B branch. It is located at St. Ignatius Square on the Boston College campus near the intersection of Commonwealth Avenue and Lake Street, on the border between the Brighton neighborhood of Boston and the Chestnut Hill neighborhood of Newton, Massachusetts. Originally opened in 1896, it has been the terminus of the Commonwealth Avenue line since 1900. The current station is planned to be replaced by a new station located in the median of Commonwealth Avenue just east of Lake Street.
Reservoir station is a light rail station on the MBTA Green Line D branch, located in Brookline, Massachusetts, adjacent to the Cleveland Circle area of Brighton. The station is adjacent to Reservoir Yard and Carhouse, with the Cleveland Circle terminus of the C branch just a block away. With a daily ridership of 3,395, Reservoir is the second-busiest surface stop on the D branch.
Heath Street station is a Massachusetts Bay Transportation Authority (MBTA) Green Line light rail station in Boston, Massachusetts. It is the southwestern terminus of the Green Line E branch. It is located at the intersection of South Huntington Avenue and Heath Street on the border between the Mission Hill and Jamaica Plain neighborhoods.
The E branch is a light rail line in Boston, Cambridge, Medford, and Somerville, Massachusetts, operating as part of the Massachusetts Bay Transportation Authority (MBTA) Green Line. The line runs in mixed traffic on South Huntington Avenue and Huntington Avenue between Heath Street and Brigham Circle, in the median of Huntington Avenue to Northeastern University, then into the Huntington Avenue subway. The line merges into the Boylston Street subway just west of Copley, running to North Station via the Tremont Street subway. It then follows the Lechmere Viaduct to Lechmere, then the Medford Branch to Medford/Tufts. As of February 2023, service operates on eight-minute headways at weekday peak hours and eight to nine-minute headways at other times, using 13 to 17 trains.
Ashmont station is a Massachusetts Bay Transportation Authority (MBTA) intermodal transit station located at Peabody Square in the Dorchester neighborhood of Boston, Massachusetts. It is the southern terminus of the Ashmont branch of the rapid transit Red Line, the northern terminus of the connecting light rail Ashmont–Mattapan High-Speed Line, and a major terminal for MBTA bus service. Ashmont has two side platforms serving the below-grade Red Line and a single side platform on an elevated balloon loop for the Mattapan Line. The station is fully accessible for all modes.
Museum of Fine Arts is a surface-level light rail stop on the MBTA Green Line E branch, located the median of Huntington Avenue in Boston, Massachusetts, between Museum Road and Ruggles Street. The station is named after the adjacent Museum of Fine Arts, although it also provides access to Northeastern University, Wentworth Institute of Technology, and the Isabella Stewart Gardner Museum. Museum of Fine Arts station is accessible.
Copley station is an underground light rail station on the MBTA Green Line, located in the Back Bay section of Boston, Massachusetts. Located in and named after Copley Square, the station has entrances and exits along Boylston Street and Dartmouth Street.
Prudential station is an underground light rail station on the MBTA Green Line E branch, located below Huntington Avenue next to the Prudential Tower complex near Belvidere Street in Boston, Massachusetts. Prudential station is accessible, featuring low raised platforms and elevator service to the Huntington Arcade of the Prudential Center shopping mall at the base of the Prudential Tower.
Symphony station is an underground light rail station in Boston, Massachusetts on the E branch of the MBTA Green Line. It is located at the intersection of Massachusetts Avenue and Huntington Avenue. Symphony is the outermost underground station on the E branch; after leaving Symphony, outbound trains emerge onto the surface and continue down the median of Huntington Avenue. Symphony station is named after the nearby Symphony Hall.
Fenway station is a light rail stop on the MBTA Green Line D branch, located under Park Drive near the Riverway in the Fenway–Kenmore neighborhood of Boston, Massachusetts. It opened along with the rest of the D branch on July 4, 1959, when trolleys replaced Highland branch commuter rail service. The station is fully accessible from Park Drive via the Landmark Center parking lot, as well as from Miner Street. Named after the Fenway neighborhood rather than Fenway Park, it is slightly further from the stadium than Kenmore, though still heavily used during events.
Brookline Village station is a light rail station on the MBTA Green Line D branch, located in the Brookline Village neighborhood of Brookline, Massachusetts, United States. It was originally a commuter rail station on the Boston and Albany Railroad's Highland branch; it closed with the rest of the line in 1958 and reopened on July 4, 1959 as a light rail station. With 3,230 daily boardings, it is the third-busiest surface station on the D branch and the sixth-busiest surface station overall. Brookline Village station has raised platforms for accessibility with low-floor light rail vehicles.
Cleveland Circle station is a surface light rail station on the MBTA Green Line C branch, located in the Brighton neighborhood of Boston, at Cleveland Circle. Cleveland Circle station is accessible, with raised platforms to accommodate low-floor light rail vehicles.
St. Mary's Street station is a surface light rail stop on the MBTA Green Line C branch, located just west of the intersection of Beacon Street and Park Drive in the northeastern tip of Brookline, Massachusetts. Like all surface stops on the line, St Mary's Street has two side platforms serving two tracks. The station is accessible. With just over 1,500 daily boardings by a 2011 count, St. Mary's Street is the second-busiest stop on the C branch, behind only Coolidge Corner.
Riverway station is a light rail station on the MBTA Green Line E branch, located at the intersection of South Huntington Avenue and Huntington Avenue in Boston, Massachusetts, slightly east of Brookline Village. The station is named for the Riverway parkway which runs on an overpass just to the west. Riverway is also the closest surface transfer between the D and E branches of the Green Line; Brookline Village station is about 1,500 feet (460 m) to the west.
Boston University Central station is a surface-level light rail station on the MBTA Green Line B branch, located the center median of Commonwealth Avenue west of St. Marys Street in Boston, Massachusetts, surrounded by the Boston University campus. It consists of two side platforms, which serve the B branch's two tracks. The station is accessible, with raised platforms to allow level boarding onto low-floor trams and a high platform on the inbound side to serve high-floor light rail vehicles.
Washington Street station is a surface stop on the Massachusetts Bay Transportation Authority (MBTA)'s Green Line B branch, located in Brighton, Boston. The station is located in the median of Commonwealth Avenue northeast of Washington Street. Washington Street station consists of two side platforms, which serve the B branch's two tracks. The station is fully accessible.
MBTA bus: 39, 66, MIS 
