The N Broadway Express is a rapid transit service in the B Division of the New York City Subway. Its route emblem, or "bullet," is colored , since it uses the BMT Broadway Line in Manhattan. The N operates at all times between Ditmars Boulevard in Astoria, Queens, and Stillwell Avenue in Coney Island, Brooklyn, via the BMT Astoria Line in Queens, Broadway Line in Manhattan, the south side of the Manhattan Bridge, and the BMT Fourth Avenue and Sea Beach Lines in Brooklyn. North of 57th Street, limited rush hour service operates via the Second Avenue Subway, originating and terminating at 96th Street on the Upper East Side of Manhattan instead of Ditmars Boulevard. During the daytime on weekdays, the N runs express between 34th Street–Herald Square in Manhattan and 59th Street in Brooklyn and local elsewhere. Local service in Manhattan is provided by the R and W, which is internally staffed and scheduled as part of the N. Select rush-hour N trains in the reverse-peak direction provide regular express service in Manhattan but stop at DeKalb Avenue and operate local on the Fourth Avenue Line in Brooklyn. Weekend daytime service is the same as weekday service, except that the N makes all stops in Manhattan between Herald Square and Canal Street. During late nights, the N makes all stops along its entire route and uses the Montague Street Tunnel to travel between Manhattan and Brooklyn. The N was originally the Brooklyn–Manhattan Transit Corporation's 4 service, running along the BMT Sea Beach Line to the Manhattan Bridge. The 4 used the BMT Nassau Street Line in Lower Manhattan from 1915 to 1917, after which it ran express on the BMT Broadway Line. The 4 became the N in 1961. The N ran local in Queens along the IND Queens Boulevard Line to Forest Hills–71st Avenue from 1976 until 1987, when it switched terminals with the R. From 1986 to 2004, reconstruction on the Manhattan Bridge forced the N to run local on the Broadway Line via the Montague Street Tunnel. Service history Before 1970 1967–1979 bullet The route that is now the N was originally BMT service 4, known as the Sea Beach Line or Sea Beach Express. On June 22, 1915, the current BMT Sea Beach Line opened, replacing a street level "el" that branched off of the Fifth Avenue El with the former BMT West End Line.