The New Haven Line is a commuter rail line operated by the Metro-North Railroad in the northeastern United States. It runs between New Haven, Connecticut and Grand Central Terminal in New York City, covering approximately 75 miles. The line serves several important cities and towns, making it a vital transportation link for commuters and travelers in the region. The New Haven Line is known for its frequent service and connections to other transit systems, including Amtrak and the Connecticut Transit bus system. It features multiple branches, including the New Canaan, Danbury, and Waterbury branches, providing access to various destinations along the route.