The N Broadway Local is a rapid transit service in the B Division of the New York City Subway. Its route emblem, or "bullet", is colored sunflower yellow since it uses the BMT Broadway Line in Manhattan. The N operates at all times between Ditmars Boulevard in Astoria, Queens, and Stillwell Avenue in Coney Island, Brooklyn via Astoria in Queens, the south side of the Manhattan Bridge, and Fourth Avenue / Sea Beach in Brooklyn. The N runs express on Fourth Avenue and local elsewhere at all times except nights when it serves all stops along its entire route, using the Montague Street Tunnel to travel between Manhattan and Brooklyn as a replacement for the R.