The DeKalb Avenue station is an interchange station on the BMT Brighton Line and BMT Fourth Avenue Line of the New York City Subway, located at the intersection of DeKalb and Flatbush Avenues in Downtown Brooklyn. It is served by the Q and R trains at all times, the B train on weekdays, and the D and N trains during late nights.
Localisation
During rush hours only, a few W train trips also serve this station. The station has six tracks and two island platforms. The two innermost tracks are used by Fourth Avenue express trains, which skip the station, while the four outer tracks are used by Brighton Line and Fourth Avenue local trains. The track configuration has been arranged several times. The current configuration dates from a 1956–1961 reconstruction project to straighten the platforms and eliminate a level junction north of the station, which had caused a switching bottleneck. Other plans, such as connections to the BMT Fulton Street Line and IRT Eastern Parkway Line, were considered at times.