About: M86 (New York City bus)

The 86th Street Crosstown Line is a bus line in Manhattan, New York City, running mostly along 86th Street on the Upper West and Upper East Sides of Manhattan. Originally a streetcar line, it now comprises the M86 Select Bus Service bus line. The M86 has the highest "per-mile ridership" of all bus routes in the city, and the second highest ridership of all Manhattan crosstown routes after the M14A/D routes along 14th Street. Because of this, the M86 became a Select Bus Service route in July 2015.