What is lexington avenue subway?

The Lexington Avenue subway is a rapid transit line that runs through Manhattan in New York City. The line consists of three separate services: the 4, 5, and 6 trains. The 4 train operates on the East Side, running from Woodlawn in the Bronx to New Lots Avenue in Brooklyn. The 5 train also operates on the East Side, running from Eastchester-Dyre Avenue in the Bronx to Flatbush Avenue-Brooklyn College in Brooklyn. The 6 train runs along the Lexington Avenue Line in Manhattan from Pelham Bay Park in the Bronx to Brooklyn Bridge-City Hall in Lower Manhattan. The Lexington Avenue Line is one of the busiest subway lines in New York City, serving numerous popular destinations, including Grand Central Terminal, the Museum of Modern Art, and Union Square.