The routes, which are operated by the New York City Transit Authority, also follow Sedgwick Avenue and Mosholu Parkway for a short distance at their northern end.

Along the way, connections to the New York City Subway can be made at: As of September 2010, the Bx1 operates as a limited-stop service during the daytime on weekdays and Saturdays, while the Bx2 serves as the local.

[3] Concourse Bus Line, Inc. was incorporated in early July 1921 by Major Emit Leindorf,[4] deputy police commissioner in charge of motor transport under Mayor Hylan.

[7] Along with a route to the Rockaways, the Concourse service was one of only two of Hylan's lines unaffected by a July 1923 injunction, since they had franchises,[8] but were discontinued anyway by September 1924[9] due to the failure of the five-cent fare to pay the costs.

[10] The franchises were reassigned to the Fifth Avenue Coach Company, which began operating the routes on October 11, 1924, for ten cents.

The Bx1 was extended to Riverdale at West 246th Street in February 1984, and was later cut back to its current terminus in 1990 after the Bx7 started running all times except nights.

[19] In March 1995, all Sunday Bx1 service began running via the Grand Concourse north of Bedford Park Boulevard.

This branch was underutilized, serving fewer than ten passengers, and the split in service underserved the Grand Concourse.

The truncation of the Bx41 made the changes cost-neutral and ensured there would not be too many buses in the vicinity of East 138th Street and Lincoln Avenue.