M21 (New York City bus)
m21  | |||
|---|---|---|---|
| Houston Street Crosstown | |||
A 2021 Nova Bus LFS HEV (9689) on the M21 in SoHo, Manhattan  | |||
| Overview | |||
| System | MTA Regional Bus Operations | ||
| Operator | Manhattan and Bronx Surface Transit Operating Authority | ||
| Garage | Michael J. Quill Depot | ||
| Vehicle | New Flyer Xcelsior XD40 New Flyer Xcelsior XE40 Nova Bus LFS HEV  | ||
| Route | |||
| Locale | Manhattan, New York, U.S. | ||
| Communities served | West Village, SoHo, Lower East Side | ||
| Start | West Village – Spring St and Hudson St West Village - 6th Avenue and Spring Street (PM rush hour)  | ||
| Via | Houston Street | ||
| End | Lower East Side – Grand Street and FDR Drive | ||
| Length | 2.5 miles (4.0 km) | ||
| Service | |||
| Weekend frequency | Every 30 minutes | ||
| Operates | 6:30 AM-11:50 PM | ||
| Annual patronage | 313,686 (2024) | ||
| Transfers | Yes | ||
| Timetable | M21 | ||
  | |||
The M21 bus route constitutes a public transit line in Manhattan, New York City. The M21 operates between the West Village and the Lower East Side, serving as a Houston Street crosstown. The M9 and M21 are operated by the Manhattan and Bronx Surface Transit Operating Authority, and based out of the Michael J. Quill Depot.