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In the list below, lines with colors next to them indicate trunk lines, which determine the colors that are used for services' route bullets and diamonds, as well as shuttle service lines. The Archer Avenue Lines and the 63rd Street Lines are each classified as two separate lines due to their structure: both lines are able to serve two divisions (the BMT and the IND) on distinct sections of track. The list of trunk lines and colors is shown in the table below.

There are three exceptions: the IND Crosstown Line, which does not carry services to Manhattan, is colored light green the BMT Nassau Street Line, which runs only through Lower Manhattan, is colored brown and all shuttles are colored dark gray. Since 1979, each service's color corresponds to the line it primarily uses in Midtown Manhattan-defined as the trunk line. For example, the R service operates along the IND Queens Boulevard Line as well as the BMT Broadway Line and the BMT Fourth Avenue Line.Įach service is assigned a color. A service can operate along several lines and even along different divisions. Some lines have changed names (and even divisions), but this happens relatively infrequently.īy contrast, a service refers to the route that a train takes across the various lines. For example, the line under Eighth Avenue is the IND Eighth Avenue Line.

Each section of the system is assigned a unique line name that begins with its original division ( IRT, BMT or IND). While in popular usage the word "line" is often used synonymously with "service" (even sometimes on the website of the MTA ), this list will use the formal usage of the term "line."Ī line is the physical structure and tracks that trains run over. In the nomenclature of the subway, the terms "line" and "service" are not interchangeable with each other. Main article: New York City Subway nomenclature