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The 4 Lexington Avenue Express is a rapid transit service in the A Division of the New York City Subway. Its route emblem, or "bullet", is colored since it uses the IRT Lexington Avenue Line in Manhattan.〔http://web.mta.info/developers/resources/line_colors.htm〕 The 4 operates between Woodlawn in the Bronx and Utica Avenue in Crown Heights, Brooklyn via Jerome Avenue Local in the Bronx and Eastern Parkway Express in Brooklyn at all times except nights. During nights, the 4 serves all stops except Hoyt Street and is extended to/from New Lots Avenue in East New York, Brooklyn via Livonia Avenue as a replacement of the 3. Limited rush hour service originates and terminates at New Lots Avenue. During rush hours, the 4 skips 138th Street – Grand Concourse in the peak direction, with some northbound trains running express north of 167th Street and short turning at Burnside Avenue. == Service history == During the extension of the IRT Lexington Avenue Line north of 42nd Street – Grand Central Terminal, shuttle elevated trains served the IRT Jerome Avenue Line (which at the time was only between East 149th Street – Grand Concourse and Kingsbridge Road) starting June 2, 1917.〔http://www.erictb.info/linehistory.html〕 On April 15, 1918, shuttles were extended to Woodlawn. A second shuttle, using subway cars, from 149th Street - Grand Concourse to Grand Central started on July 17, 1918. On August 1, 1918, the entire Jerome and Lexington Avenue Lines were completed and the connection to the Broadway – Seventh Avenue Line at 42nd Street was removed. Trains began running between Woodlawn and Bowling Green.〔 Beginning on November 24, 1925, rush hour 4 trains ran to Crown Heights – Utica Avenue.〔 Beginning on December 5, 1927, weekday evening service extended to Utica.〔 Beginning in 1928, midday 4 service was extended from South Ferry to Utica.〔 As of 1934, 4 trains ran from Woodlawn to Utica Avenue weekday rush and Saturday morning peak and afternoon, to Atlantic Avenue weekday midday, Saturday morning after the peak, and late nights, and to South Ferry evenings and Sundays. Trains ran express in Manhattan except late nights, and in Brooklyn. On August 20, 1938, Saturday morning after the peak service was extended to Utica Avenue. Beginning on May 10, 1946, late night trains began running express in Manhattan. Beginning on December 20, 1946, trains were extended from Utica Avenue to New Lots Avenue during late nights, express between Atlantic Avenue and Franklin Avenue.〔 During 1950, Saturday morning service was cut back to South Ferry Starting on December 15, 1950, four 4 trains operated during rush hours to Flatbush Avenue on the Nostrand Avenue Line.〔 Also on December 15, 1950 weekday midday service was cut back from Atlantic Avenue to South Ferry. On March 19, 1954, late-night service in Brooklyn began making all stops, but resumed operating express between Atlantic Avenue and Franklin Avenue on June 29, 1956. On May 3, 1957, the weekday rush trains to Flatbush Avenue were discontinued, while at the same time evening, Saturday and Sunday afternoon trains were extended to Utica Avenue, while Sunday morning trains were extended to Atlantic Avenue. Starting on March 1, 1960, 4 late-night trains began making all stops in Manhattan. Beginning on April 8, 1960, nearly all AM rush hour 4 trains ran to Flatbush, and PM rush hour 4 trains alternated between Flatbush and Utica. During weekday evenings and late nights 4 trains also went to Flatbush Avenue, making all stops in Brooklyn.〔 Beginning on October 17, 1965 late-night trains again became express in Manhattan. On May 23, 1976, Sunday morning trains were extended to Utica Avenue, express in Brooklyn. Beginning on January 13, 1980, all 4 trains began operating local in Manhattan during late night hours to replace the , which was shortened to a shuttle between 125th Street and Pelham Bay Park.〔 Beginning on July 10, 1983, all 4 trains ran to Utica, except that weekday midday trains ran only to Atlantic Avenue, and late-night trains ran local during late nights and Sunday morning operating to New Lots. On August 29, 1988, midday 4 trains were extended to Utica Avenue as well.〔 For a short time in 1990 starting January 21, late-night express service in Manhattan was restored, as 6 trains were re-extended to Brooklyn Bridge late nights, but then late-night express service was permanently discontinued on October 5, 1990. From June 8, 2009, to June 26, 2009, New York City Transit conducted a pilot program for express Jerome Avenue Line service. Four morning weekday rush hour trains from Woodlawn stopped at Mosholu Parkway, Burnside Avenue and 149th Street – Grand Concourse before they resumed regular service in Manhattan and Brooklyn.〔 On October 26, 2009, another 4 express pilot program was implemented based on the success of the first and ran until December 11, 2009. This program was the same as the one in June except that express trains stopped at Bedford Park Boulevard – Lehman College.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「4 (New York City Subway service)」の詳細全文を読む スポンサード リンク
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