Service between Croton–Harmon and Poughkeepsie is provided by diesel trains these generally run express and skip most of the lower stations. North of Croton–Harmon, the line is not electrified and is mostly double-tracked (with a few triple track areas) the stations are also spaced further apart. Local service is usually provided by electric trains, while diesel trains run express. For a few miles in the Bronx there are only two or three tracks. Most of the electrified zone has four tracks, usually two express and local tracks in each direction. South of there, the line is electrified with third rail, serving suburban stations located relatively close together.

It runs along what was the far southern leg of the Central's famed 'Water Level Route' to Chicago.Ĭroton–Harmon station divides the line into two distinct segments. The line was originally the Hudson River Railroad (and the Spuyten Duyvil and Port Morris Railroad south of Spuyten Duyvil), and eventually became the Hudson Division of the New York Central Railroad.

It runs north from New York City along the east shore of the Hudson River, terminating at Poughkeepsie. The Hudson Line is a commuter rail line owned and operated by the Metro-North Railroad in the U.S.

Metro north map