Originally a streetcar line, it is now the B44 bus route, operated by the New York City Transit Authority.

At Farragut Road, the northbound B44 Local shifts back to Nostrand Avenue, as two-way traffic resumes.

Buses layover on Shore Parkway and re-enter service on Knapp Street.

The B44 bus route acts as a subway feeder connecting passengers from several subway routes that intersect the B44, as well as connecting neighborhood destinations such as Brooklyn College, NYC Health + Hospitals/Kings County, and the Nostrand Avenue Retail corridor.

[13][14][15] Buses were substituted for streetcars on April 1, 1951;[12] the B44 bus now continues south past Avenue U into Sheepshead Bay, some B44 buses now go as far as Emmons Avenue and Knapp Street near the foot of Sheepshead Bay.

The route ran in both directions on Nostrand Avenue until the mid-1960s, when the section north of Flatbush became a one-way southbound thoroughfare.

[5] The construction of the designated bus lanes for the service required the removal of the surface line's rails, which had been previously paved over.

[17] On January 20, 2013, articulated buses started appearing on the B44, which initially ran both the local and limited variants.

Off-board fare collection was installed, significantly reducing the amount of time it takes for buses to spend at bus stops.

B44 local service was kept on New York Avenue to continue serving passengers along that street.

As a result of this, riders on both Rogers Avenue and New York Avenue now have direct service to destinations north of Fulton St. 62-foot-long, 3-door buses were put into service on the route, replacing the 40-foot-long, 2-door buses that previously served the B44 Limited.

Resulting form the installation of bus bulbs or neckdowns, which shorten the crossing distances, traffic injuries along the corridor were reduced by 37%.

[5] After years of requests by Councilman Chaim Deutsch and local residents, a stop was added at Avenue R on September 2, 2018, shortening the 1 mile (1.6 km)-long distance between the Kings Highway and Avenue U stops, while providing transfer to the B2 and B31 buses.

[20] A protest had been held on April 30, 2015, by seniors and local officials to put pressure on the MTA.