The Q 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 is a part of the BMT Broadway Line in Manhattan.

The Q operates 24 hours daily between 96th Street on the Upper East Side of Manhattan and Stillwell Avenue in Coney Island, Brooklyn. Daytime service makes express stops in Manhattan (between 57th Street–Seventh Avenue and Canal Street) and all stops in Brooklyn; overnight service makes all stops along the full route.

The Q was originally the Brooklyn–Manhattan Transit Corporation's (BMT) 1 service; beginning in 1920, it ran along the Brighton Line in Brooklyn and Broadway Line in Manhattan. In the past, the Q has run many different service patterns in Brooklyn, Manhattan and Queens, both local and express, including QB service on the Manhattan Bridge and QT service via the Montague Street Tunnel. From 1988 to 2001, Q service ran along the IND Sixth Avenue Line in Manhattan, with a bullet colored orange. The Q also ran in Queens at various points, including along the BMT Astoria Line to Astoria–Ditmars Boulevard on weekdays from 2010 to 2016, along the IND Queens Boulevard Line to Forest Hills–71st Avenue during temporary post-9/11 service reroutes, and along the IND 63rd Street Line to 21st Street–Queensbridge until 2001. There was also a <Q> variant from 2001 to 2004, which ran express on the Brighton Line, used a diamond bullet, and terminated at Brighton Beach due to construction on the north side of the Manhattan Bridge. On January 1, 2017, the Q was rerouted along the Second Avenue Subway.

History 1878–1920: Original railroad The predecessor to the subway service known as the Q today was the Brooklyn, Flatbush and Coney Island Railway. On July 2, 1878, this steam railroad began operations on what would become the BMT Brighton Line, from Prospect Park to the Brighton Beach Hotel in Brighton Beach, which opened at the same time. The Brighton Beach Hotel was located on Coney Island by the Atlantic Ocean at the foot of modern-day Coney Island Avenue. Passengers could make connections with the horsecars of the Brooklyn City Railroad at the Prospect Park terminal.

On August 19, 1878, service was extended north from Prospect Park along what is today the BMT Franklin Avenue Line used by the Franklin Avenue Shuttle, to Atlantic Avenue west of Franklin Avenue, a location known as Bedford station on what is today the Atlantic Branch of the Long Island Rail Road (LIRR). A physical connection existed between the Brighton, Flatbush and Coney Island Railway and the LIRR. By mutual agreement trains of the Brooklyn, Flatbush and Coney Island Railway ran on LIRR trackage west to its terminal at Flatbush Avenue and Atlantic Avenue, providing a connection to Downtown Brooklyn and ferries to Manhattan. LIRR trains also operated to Brighton Beach from Flatbush Avenue and from its own terminal in Long Island City, with ferry access to Midtown Manhattan. Initially, service operated during the summer season only. At the end of the 1882 summer season, the LIRR abrogated its agreement allowing Brighton Line trains to access its Flatbush Avenue terminal and beginning with the 1883 summer season, only Brooklyn, Flatbush and Coney Island trains operated between Bedford Terminal and Brighton Beach.

In 1896, a short elevated extension of the Brighton Beach Line (since reorganized as the Brooklyn & Brighton Beach Railroad) opened to the corner of Franklin Avenue and Fulton Street in the north. This extension connected to the Fulton Street Line of the Kings County Elevated Railroad, allowing rapid transit trains on Fulton Street to operate along the Brighton Line. These trains ran from Brighton Beach, up the Franklin Avenue and Fulton Street lines to the Brooklyn side of the Brooklyn Bridge, where walking or transferring to a cable car service connection over the bridge allowed access to New York City Hall at Park Row in Manhattan. In 1900, elevated trains were through-routed to Park Row without need to change trains. By 1903, a surface extension of the Brighton Beach Line on what is now Brighton Beach Avenue permitted through service from Park Row, Manhattan west to Culver Depot at Surf Avenue near West 8th Street, much nearer to the growing amusement center known then as West Brighton and now as Coney Island.

In 1908, a massive grade crossing elimination project was completed with a 4-track line from south of Church Avenue station to Neptune Avenue near the Coney Island Creek, permitting true local and express service, as pioneered on the New York City Subway that opened in 1904. The Brighton Beach line was also converted to electrified third rail. Brighton Beach local and express service was extended to a new West End terminal at Stillwell and Surf Avenues, the location of the Coney Island terminal for the BMT Southern Division, in May 1919.

1920–1950: Subway service begins On August 1, 1920, subway service on the BMT Brighton Line, then owned by the Brooklyn-Manhattan Transit Corporation (BMT), officially began with the openings of a two-track underground subway between Prospect Park and DeKalb Avenue and the Montague Street Tunnel between Brooklyn and Manhattan.

In 1921, PM rush hour express service was extended from Kings Highway to Brighton Beach. In 1923, Brighton express service operated via the Montague Tunnel and ran local on the Broadway Line. The BMT held a vote to see which route riders preferred on August 30, 1923. Passengers voted to have Brighton expresses run from Brighton Beach to Times Square via the Manhattan Bridge and the express tracks on the Broadway Line. This change took effect on about October 1, 1923. This subway service was labeled 1 by the BMT starting in 1924, with the remnant service to Franklin Avenue becoming the 7. 1 Brighton Express service operated during rush hours and Saturday afternoons. During the evening rush hour and on Saturday afternoons, trains skipped Canal Street.

The span of express service was extended by 90 minutes until 8:27 p.m. leaving Times Square in 1929. Express service began operating between the AM rush hour and noon on Saturday mornings in April 1930. Express service began operating middays on May 30, 1931, replacing short-line local service. In September 1937, Brighton express service ran between Brighton Beach and Times Square rush hours, middays, and early evenings weekdays and Saturdays.

During the 1930s, limited morning rush hour service ran via the south side tracks of the Manhattan Bridge and the Nassau Street Loop to Chambers Street on the BMT Nassau Street Line. On June 29, 1950, trains began running there during the evening rush as well.

On October 17, 1949, the IRT Astoria Line in Queens, up to this point operated by the Interborough Rapid Transit (IRT), was converted to BMT operation. 1 Local trains were extended via the 60th Street Tunnel and the BMT Astoria Line to Astoria–Ditmars Boulevard during weekday rush hours, and on Saturday mornings and early afternoons. Number 2 Fourth Avenue Local trains also ran here at all times.

1950s On April 27, 1950, 1 Local trains were extended to Astoria–Ditmars Boulevard during middays. On June 26, 1952, 1 Express trains were extended from Times Square to 57th Street–Seventh Avenue on weekdays after the morning rush hour, running local north of 34th Street. On June 28, 1952, special service from Brighton Beach to the Nassau Street Line was discontinued on Saturdays, and Saturday express service was extended to 57th Street.

The 60th Street Tunnel Connection opened on December 1, 1955, connecting the Broadway Line to the IND Queens Boulevard Line. 1 Local trains were rerouted to this new connector to Forest Hills–71st Avenue in Forest Hills, Queens between 6:30 a.m. and 8:20 p.m. They were replaced on the BMT Astoria Line by 1 Express trains on weekdays. On May 4, 1957, 1 Express trains running started running to Ditmars Boulevard on Saturdays as well, but made local stops in Manhattan as the local trains in Brooklyn now ran to Chambers Street via the BMT Nassau Street Line. The final portion of the Broadway Line's express tracks, between Times Square–42nd Street and 57th Street–Seventh Avenue, was placed in service on May 2, 1957. 1 Brighton Express trains ran local in Manhattan on Saturdays while Brighton Locals ran express here during evenings and on Sundays. This lasted only until the next service change. On October 24, 1957, Brighton Local trains ran via the Manhattan Bridge and local in Manhattan, all day on Sundays as well as evenings and midnight hours. Brighton Express 1 service on weekdays began using the express tracks between Times Square–42nd Street and 57th Street–Seventh Avenue.

A December 1957 strike shut down much of the BMT Division. Brighton Local 1 trains ran in two sections, from Coney Island via tunnel to 57th Street-Seventh Avenue and from Whitehall Street to Jamaica–179th Street on the IND Queens Boulevard Line. Due to the differing unions predominating on the various divisions, the IND was completely knocked out of service, while the IRT ran virtually normal service. The BMT was about half affected, with makeshift service patterns being set up for the duration of the strike.

On May 28, 1959, 1 Brighton Express trains midday on weekdays were cut back to 57th Street–Seventh Avenue and made local stops in Brooklyn midday. Multiple trains entered service at Queensboro Plaza in the evening rush hour. Nassau Specials returned, running via the Montague Street tunnel during the morning rush and via the Manhattan Bridge during the evening rush. As part of the same service change, Brighton Local trains, beginning on June 6, ran to Franklin Avenue via the route of the 7 Shuttle on Saturdays. This was not seasonal and ran the entire day, being quite distinct from the Sunday service which still operated.

1960–1987: Lettered variants and Chrystie Street Connection On November 15, 1960, with the arrival of the R27 subway cars, 1 service on the Brighton Line was relabeled. Brighton Express service was designated as Q, Brighton Local via the Montague St Tunnel as QT, and Brighton Local via the Manhattan Bridge as QB. Single letters were used to refer to express lines and double letters for local lines, a practice that began thirty years earlier with the Independent Subway System (IND), however, no QQ designation was ever used. Despite these new designations, subway communications continued to refer to the services as "Brighton Local" and "Brighton Express".

Effective January 1, 1961, Q Brighton Express service was cut back from Ditmars Boulevard to 57th Street–Seventh Avenue on weekdays, with trains skipping 49th Street. Saturday daytime service continued to run to Ditmars Boulevard. QT service ran to Ditmars Boulevard on weekdays; on Saturdays, it ran via the Franklin Avenue Line to Franklin Avenue in Brooklyn instead. The QB provided off-peak service between Coney Island and Astoria, via Brighton Local and the Manhattan Bridge. Sunday service between Franklin Avenue and Brighton Beach was discontinued on this date, with Sunday service now provided solely by the Franklin Avenue Shuttle (SS, formerly 7) between Prospect Park and Fulton Street.