NEC infrastructure outside the terminus: Hartford Line: operated in conjunction with ConnDOT, runs across Amtrak-owned New Haven–Springfield line from Springfield Union to New Haven Union, the latter of which uses NEC infrastructure. Capitol Limited: runs from Washington, D.C. Union to Chicago Union, the former of which uses NEC infrastructure. Six Amtrak services operate via the Empire Corridor, a line largely owned by CSX, with other sections owned by Metro-North Railroad and Amtrak. It meets the NEC at New York Penn Station. Adirondack: runs from New York Penn to Montreal Central Berkshire Flyer: higher-speed rail from New York Penn to Albany–Rensselaer and the Joseph Scelsi Intermodal Transportation Center in Pittsfield, Massachusetts Empire Service: higher-speed rail from New York Penn to Albany–Rensselaer and Niagara Falls Ethan Allen Express: runs from Burlington Union to New York Penn Lake Shore Limited: runs from Chicago Union to New York Penn; also has a branch to the NEC's terminus at Boston South Maple Leaf: runs from New York Penn to Toronto Union Due to the wide availability of the Northeast Regional, Keystone Service, and Acela Express, as well as commuter rail, most long- and medium-haul trains operating along the New York-Washington leg of the NEC do not allow local travel between NEC stations. In most cases, long- and medium-haul trains only stop to discharge passengers from Washington (and in some cases, Alexandria) northward, and to receive passengers from Newark to Washington. This policy is intended to keep seats available for passengers making longer trips. The Vermonter and Palmetto are the only medium- and long-haul trains that allow local travel in both directions between New York and Washington. The southbound Carolinian allows local travel daily, while the northbound Carolinian only allows local travel on Sundays, Thursdays, and Fridays. Additionally, the medium-haul Pennsylvanian allows local NEC travel, but this train leaves the corridor in Philadelphia and does not travel all the way to Washington. Commuter rail In addition to Amtrak, several commuter rail agencies operate passenger service using the NEC tracks: Massachusetts Bay Transportation Authority (MBTA) Providence/Stoughton Line: Wickford Junction–Boston Franklin Line: Readville–Boston Needham Line: Forest Hills–Boston Framingham/Worcester Line: Back Bay Station–Boston CTrail Hartford Line: New Haven Union Station–New Haven-State Street Shore Line East: Stamford–New London, Connecticut Metro-North Railroad (MNRR) New Haven Line: New Rochelle, New York–New Haven, Connecticut Danbury Branch: Stamford–Norwalk, Connecticut Waterbury Branch: Bridgeport–Stratford, Connecticut Long Island Rail Road (LIRR) City Terminal Zone: Sunnyside Yard, Queens–New