Service will be suspended for four consecutive weeknights until early morning, May 10. The N trains will be rerouted via the D line in both directions between 36th Street and Coney Island-Stillwell Avenue.
FASTRACK was introduced in January 2012, devoting four straight weeknights to perform maintenance work in tunnels, stations and on tracks, completely suspending service within a given line segment for a seven-hour period between. This gives free access to the system, allowing an army of maintenance workers to perform dozens of tasks without the concern of having to "clear up" to allow trains to pass.
The next FASTRACK weekend closure will be between Coney Island-Stillwell Avenue (D and N) and Bay Parkway (D) and 86th Street (N). The next FASTRACK weekday overnight closure will be on the Upper East Side in Manhattan on the 4, 5 and 6 from May 20-24.