About: M9 (New York City bus)
The M9 is a local bus route that operates along the Avenue C Line (also known as the Houston Street Line), in Manhattan, New York City. The route runs mostly along Essex Street and Avenue C from Battery Park City to Kips Bay. Originally a streetcar line, the Avenue C Line is now part of the M9 route, as well as the M21, which operates on the Houston Street Line. Both the Avenue C and Houston Street segments were served by a single route, the M21, until June 2010. The M9 and M21 are operated by the New York City Transit Authority, and based out of the Michael J. Quill Depot.
