The
Brooklyn–Manhattan Transit Corporation (
BMT) was an
urban transit holding company, based in
Brooklyn,
New York City,
United States, and incorporated in 1923. The system was sold to the city in 1940. Today, together with the
IND subway system, it forms the
B Division of the modern
New York City Subway. The original BMT routes currently form the , , , , , and trains, as well as the
Franklin Avenue Shuttle, with the ex-
IND , , and using BMT trackage in Brooklyn, as does a short section of the in Queens. The train enters the IND via the
Chrystie Street Connection after crossing the
Williamsburg Bridge, and the train enters the IND via the
60th Street Tunnel Connection. The train supplements the in the peak direction during rush hours only.