Independent Subway System
Service letters
As originally designed, the IND train identification scheme was based on three things: the Manhattan trunk line served (8th Avenue or 6th Avenue), the northern branch line served (Washington Heights, Grand Concourse/Bronx, or Queens Boulevard), and the service level (Express or Local).

Independent Subway System

Section Title: Service letters
Table Section Text: As originally designed, the IND train identification scheme was based on three things: the Manhattan trunk line served (8th Avenue or 6th Avenue), the northern branch line served (Washington Heights, Grand Concourse/Bronx, or Queens Boulevard), and the service level (Express or Local).

Line	Routing	Notes

A	Washington Heights Express	207th Street – Lefferts Boulevard or Far Rockaway or Rockaway Park (via Eighth Avenue)	still in use

AA	Washington Heights Local	168th Street – Hudson Terminal (via Eighth Avenue)	became K (no longer operated)

BB	Washington Heights Local	168th Street – 34th Street (via Sixth Avenue)	became B (now goes from Bedford Park Boulevard to Brighton Beach)

C	Bronx Concourse Express	205th Street – Utica Avenue (via Eighth Avenue)	no longer operated; combined into A and D trains

CC	Bronx Concourse Local	Bedford Park Boulevard – Hudson Terminal (via Eighth Avenue)	became C (now goes from 168th Street to Euclid Avenue)

D	Bronx Concourse Express	205th Street – Coney Island (via Sixth Avenue and Culver Line)	still in use, though trains now use the West End Line

E	Queens–Manhattan Express	179th Street – Rockaway Park or Hudson Terminal (via Eighth Avenue and Houston Street)	still in use, though all trains go from Jamaica Center to Hudson Terminal (now called World Trade Center)

F	Queens–Manhattan Express	179th Street – Hudson Terminal or Coney Island (via Sixth Avenue)	still in use, though all trains go to Coney Island or Kings Highway

GG	Queens Brooklyn Local	Forest Hills – Church Avenue (via Crosstown Line)	became G, though all trains short turn at Court Square

HH	Court Street Shuttle	Court Street – Hoyt–Schermerhorn Streets	no longer operated, but the trackage is used for moving trains in and out of the New York Transit Museum, located in the Court Street station

HH	Rockaway Local	Euclid Avenue – Rockaway Park or Far Rockaway	became H, then S, though now, all trains only go to Rockaway Park

Sentence(s)

The AA Washington Heights Local provided service between 168th Street and the Hudson Terminal via the Eighth Avenue Line.

final_sentence: The AA Washington Heights Local provided service between 168th Street and the Hudson Terminal via the Eighth Avenue Line.