J/Z (New York City Subway service)

Nassau Street Local Nassau Street Express
A J train of R179s at Flushing Avenue
A Z train of R160s at Chambers Street
Western end	Broad Street
Eastern end	Jamaica Center–Parsons/Archer
Stations	30 (J service) 21 (Z service) 20 (J skip-stop service)
Rolling stock	R160 R179[1][2] (Rolling stock assignments subject to change)
Depot	East New York Yard
Started service	1893; 131 years ago (1893) (predecessor) November 1967; 56 years ago (1967-11) (present-day J service) December 11, 1988; 35 years ago (1988-12-11) (present-day Z service)
Route map Legend Jamaica Center–Parsons/Archer ​ J  ​ Z   E  Sutphin Boulevard–Archer Avenue–JFK Airport Manhattan via Queens Boulevard rush hour skip-stop service J serves all stations other times Z 121st Street J 111th Street Z 104th Street J Z Woodhaven Boulevard J 85th Street–Forest Parkway Z 75th Street–Elderts Lane Queens Brooklyn J Cypress Hills J Z Crescent Street Z Norwood Avenue J Cleveland Street Z Van Siclen Avenue J Z Alabama Avenue no regular service via Canarsie J Z Broadway Junction Z Chauncey Street J Halsey Street Z Gates Avenue J Kosciuszko Street rush hour skip-stop service J serves all stations other times Middle Village via Myrtle Avenue rush hour peak direction express Myrtle Avenue Flushing Avenue Lorimer Street Hewes Street rush hour peak direction express Marcy Avenue Brooklyn Manhattan Essex Street  M  (weekends) Uptown & Queens via 6th Avenue Bowery Canal Street Chambers Street Fulton Street Broad Street  J  ​ Z  no regular service via Montague Tunnel Legend Lines used by the and Other services sharing tracks with the and Unused lines, connections, or service patterns  J  Termini of services Cross-platform interchange Platforms on different levels This diagram: view talk edit

The J Nassau Street Local and Z Nassau Street Express^[3] are two rapid transit services in the B Division of the New York City Subway. Their route emblems, or "bullets", are colored brown since they use the BMT Nassau Street Line in Lower Manhattan.^[4]

The J operates at all times while the Z, operating as its rush-hour variant,^[5] runs with six trips in each peak direction on weekdays. Both services run through the entirety of the BMT Archer Avenue and Jamaica lines, via the Williamsburg Bridge, and the Nassau Street Line between Jamaica Center–Parsons/Archer in Jamaica, Queens, and Broad Street in Lower Manhattan. When the Z operates, the two services form a skip-stop pair between Sutphin Boulevard–JFK and Myrtle Avenue-Broadway. In addition during rush hours and middays in the peak direction, they run express in Brooklyn between Myrtle Avenue-Broadway and Marcy Avenue, bypassing three stations. At all other times, only the J operates, serving every station on its entire route.

The J/Z's current skip-stop pattern was implemented in 1988. The J/Z is derived from four routes:

• The JJ/15 between Broad or Chambers Streets in Lower Manhattan and 168th Street in Queens
• The KK between 57th Street/Sixth Avenue in Midtown Manhattan and 168th Street in Queens
• The QJ between Brighton Beach in Brooklyn and 168th Street in Queens
• The 14 between Broad or Chambers Streets in Lower Manhattan and Canarsie–Rockaway Parkway in Brooklyn