Eighth Avenue Local | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
K train rollsign on a preservedR40 car at theNew York Transit Museum | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Northern end | 168th Street | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Southern end | World Trade Center | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stations | 23 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Started service | September 10, 1932; 93 years ago (1932-09-10) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Discontinued | December 11, 1988; 36 years ago (1988-12-11) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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TheK Eighth Avenue Local, earlier theAA, was arapid transit service of theNew York City Subway. Its route bullet was colored blue on station signs, car rollsigns, and the official subway map since it ran on theIND Eighth Avenue Line.
The K operated during midday, evenings, and weekends, making local stops between168th Street inWashington Heights, Manhattan andWorld Trade Center inLower Manhattan viaCentral Park West andEighth Avenue inManhattan. During late night hours, the A express made local stops on theIND Eighth Avenue Line. During rush hours, theC, formerly theCC, ran betweenBedford Park Boulevard andEuclid Avenue, replacing the K as the local onEighth Avenue. It was discontinued in 1988 as part of a series of major service changes.

A and AA service began on September 10, 1932, with the opening of theIND Eighth Avenue Line. TheIndependent Subway System (IND) used single letters to refer to express services and double letters for local services. TheA ran express and the AA ran local, from168th Street toHudson Terminal (now World Trade Center). The AA ran at all times, and it was extended to207th Street during nights and on Sundays when theA did not run. When the Eighth Avenue Line was extended toJay Street–Borough Hall on February 1, 1933, the AA was extended there evenings and Sundays, when theA did not run.[1][2]
On July 1, 1933, the AA was suspended when the Concourse Line opened and the newCC service provided local service on Eighth Avenue in its place. A service began running express in Manhattan at all times. AA service was restored as part of changes made in conjunction with the opening of theIND Sixth Avenue Line on December 15, 1940. The AA would only run during non-rush hours and Saturday late afternoon through all day Sunday service toChambers Street. Rush hours, which at the time included Saturday mornings and afternoons, the AA did not run; it was replaced by the BB (laterB) service, which instead ran on the Sixth Avenue Line.[3] On January 5, 1952, AA service began operating during Saturday mornings and afternoons, replacing BB service.[2] This pattern was unchanged until August 28, 1977, when late night service was replaced by an all localA service.[1][4]

On May 6, 1985, as part of theelimination of double letters, the AA was renamed the K. This service operated between168th Street andWorld Trade Center during midday, evenings, and weekends. During late night hours, the A express made local stops on the Eighth Avenue Line. During rush hours, theC, formerly theCC, ran betweenBedford Park Boulevard andRockaway Park–Beach 116th Street, replacing the K as the local on Eighth Avenue.[5] This change was not officially reflected in schedules until May 24, 1987.[1]

On December 11, 1988, as part of thewidespread service changes that day, the K was discontinued, being replaced by theC train, which was expanded from its rush-hour only service to include midday service between145th Street andEuclid Avenue, early evening (until 9 p.m.) service from145th Street toWorld Trade Center, and weekend service matching the former K between168th Street andWorld Trade Center.[6] TheB was also expanded to middays to match part of the former K.[7][1]
The following table shows the lines used by the K service:
| Line | From | To | Tracks |
|---|---|---|---|
| IND Eighth Avenue Line | 168th Street | World Trade Center | Local |
For a more detailed station listing, see the articles on the lines listed above.
| Station service legend | |
|---|---|
| Stops 24 hours a day | |
| Stops every day during daytime hours only | |
| Stops during weekday daytime hours only | |
| Stops weekdays in the peak direction only | |
| Time period details | |
| Station is compliant with theAmericans with Disabilities Act | |
| Station is compliant with theAmericans with Disabilities Act in the indicated direction only | |
| Elevator access to mezzanine only | |