New Haven Line

Metro-North Railroad's New Haven Line runs from New Haven, Connecticut southwest to Mount Vernon, New York. There it joins the Metro-North Harlem Line, where trains continue south to Grand Central Terminal in Manhattan.

The line is owned by Metro-North from Mount Vernon to the New York-Connecticut border. From the state line to New Haven, the right-of-way is owned by the Connecticut Department of Transportation (CDOT). From west to east in Connecticut, three branches split off: the New Canaan Branch, Danbury Branch, and Waterbury Branch, all owned by CDOT.

In addition to Metro-North trains, Amtrak's Northeast Regional and Acela Express use the line between New Rochelle, New York and New Haven, Connecticut. Shore Line East, a commuter service operated by Amtrak for CDOT, also operates over the New Haven Line from its normal terminus at New Haven with limited express service to Stamford with a single stop in Bridgeport.