B Division (New York City Subway)
| B Division | |||
|---|---|---|---|
 | |||
                (Franklin Avenue Shuttle) (Rockaway Park Shuttle) | |||
| Technical | |||
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge | ||
| Minimum radius | 147.5 ft (44.96 m) | ||
| Electrification | Third rail, 625 V DC | ||
| |||
The B Division is a division of the New York City Subway consisting of the lines whose services are designated by letters (A, B, C, D, E, F, G, J, L, M, N, Q, R, W, and Z), as well as the Franklin Avenue and Rockaway Park shuttles. These lines and services were operated by the Brooklyn–Manhattan Transit Corporation (BMT) and city-owned Independent Subway System (IND) prior to the 1940 city takeover of the BMT.
The B Division rolling stock is wider, longer, and heavier than that used on the A Division measuring up to 10 feet (3 m) in width and 75 feet (23 m) in length, compared to 8 feet 7+3⁄16 inches (2.621 m) in width and 51 feet (16 m) in length for A Division cars, which are limited by the infrastructure's loading gauge.
The B Division is broken down into two subdivisions, B1 (BMT) and B2 (IND), for chaining purposes. The two former systems are still sometimes referred to as the BMT Division and IND Division.