Metro North Railroad's New Haven Line runs from New Haven, Connecticut southwest to Woodlawn, New York on the Harlem Line, where New Haven Line trains continue south to Grand Central Terminal in Manhattan. Northeast of New Rochelle, New York it is also part of Amtrak's Northeast Corridor, but is owned by Metro-North. The line was formerly part of the New York, New Haven, and Hartford Railroad (the New York and Hew Haven Railroad until 1872), which had trackage rights over the New York Central Railroad's New York and Harlem Railroad into Grand Central. From west to east, three branches split - the New Canaan Branch, Danbury Branch, and Waterbury Branch.

Penn Central, the Metropolitan Transportation Authority and the states of New York and Connecticut signed an agreement November 25, 1969 for New York to buy the section of the line in that state and Connecticut to lease their section (to New Haven). The actual acquisition was done on January 1, 1971, and included the three branches. [http://www.prrths.com/Hagley/PRR1971%20Jun%2005.pdf

Station stops

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• Grand Central Terminal
• Harlem-125th Street

Hudson Line splits

Melrose and Tremont stations are bypassed

• Fordham

Botanical Garden, Williams Bridge, and Woodlawn stations are bypassed

Harlem Line splits

• Mount Vernon East

Power change from third rail to catenary

• Pelham

Line joins Northeast Corridor

• New Rochelle (also Amtrak Regional)
• Larchmont
• Mamaroneck
• Harrison
• Rye
• Port Chester
• Greenwich
• Cos Cob
• Riverside
• Old Greenwich
• Stamford (also Amtrak Acela Express, Regional and Vermonter)

New Canaan Branch splits

• Noroton Heights
• Darien
• Rowayton
• South Norwalk

Danbury Branch splits

• East Norwalk
• Westport
• Green's Farms
• Southport
• Fairfield
• Bridgeport (also Amtrak Regional and Vermonter)
• Stratford

Waterbury Branch splits

• Milford
• New Haven-Union Station (also Amtrak Acela Express, Regional and Vermonter)
• New Haven-State Street

Multiple Unit Equipment

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Since most of the main line and the New Canaan Branch run on overhead catenary (as opposed to the third rail of the Hudson and Harlem lines), different rolling stock runs on the New Haven line as opposed to its sisters. This rolling stock, originally produced by the Budd Company in 1972, was initially branded as the The Cosmopolitans (model M2) with later versions being made on license by Tokyu Car (model M4, 1987) and Morrison-Knudsen (model M6, 1993) . Cosmopolitans can be easily spotted by their red line along the body, the presence of pantographs on the lead cars in each set, and a mechanical bubble on the roof. Most of the M2's are slated for retirement in 2008 when the Bombardier-made M8 enters service. However, due to CDOT funding, the M8 will not enter service until 2012.<-- unverified; still slated for 2008-2009.

M8 Current Designs

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Metro-North Railroad | New York, New Haven and Hartford Railroad | Amtrak