Bx18 (New York City bus)

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bx18A bx18B
170th Street Circulator Loop Line
Overview
System	MTA Regional Bus Operations
Operator	Manhattan and Bronx Surface Transit Operating Authority
Garage	Kingsbridge Depot
Vehicle	Nova Bus LFS Nova Bus LFS HEV New Flyer Xcelsior XE40
Began service	June 22, 1941
Route
Locale	The Bronx, New York, U.S.
Communities served	Morrisania, Morris Heights, Highbridge
Start	Morrisania – East 170th Street & Grand Concourse (clockwise)
Via	Macombs Road, Undercliff Avenue, West 168th Street (Bx18A only), Sedgwick Avenue, Macombs Road (Bx18B only)
End	Morrisania – East 170th Street & Grand Concourse (counterclockwise)
Service
Operates	All times except late nights
Annual patronage	292,659 (2023)[1]
Transfers	Yes
Timetable	Bx18 bus
Route map ← Bx17  {{{system_nav}}}  Bx19 →

The Bx18A and Bx18B (collectively referred to as Bx18A/B or Bx18) bus routes constitute the 170th Street Circulator Loop Line. These bus routes run through a loop after 170th Street. The Bx18A goes through Undercliff Avenue while the Bx18B follows Sedgwick Avenue until turning back to 170th Street.