The FASTRACK maintenance program completely suspends train service over a segment of a subway line to give workers uninterrupted access to tracks, signals, cables, lighting, third rail components and platform edges.
This week, work is being done on the N, Q and R lines.
From 10 p.m. until 5 a.m. there's no late-night service at any of the Manhattan stations on those three lines.
N trains will operate in Brooklyn and Queens, Q trains will run along Sixth Avenue and shuttle buses will replace R trains in Brooklyn.
For a complete list of changes and for alternative routes please visit: MTA.info