The shuttle's fleet consists of four 2-car train R68s from the Avenue X/Stillwell Avenue Yard with one as a spare in the yard, one in storage on the unused "southbound local" track at Prospect Park and two in service. As opposed to regular R68s in the fleet, the shuttle's information signs are stickers instead of rollsigns and car 2723 uses three-piece windows. The shuttle also runs One Person Train Operation with the motorman also being a conductor meanwhile, at the end of each run the motorman/conductor will go to the opposite car to make another run.
Prior to the 1998-99 renovation, trains consisted of four R32s.
The current service is co-extensive with the BMT Franklin Avenue Line. It parallels Franklin Avenue, hence its name. It was originally a part of the mainline of the BMT Brighton Beach Line and opened as part of that steam railroad line in 1878. The mainline was shifted in 1920, and the Franklin line was reduced to a full-time shuttle in the early 1960s. The line was fully two tracks (with only one track used at Prospect Park) before the 1998-1999 rehabilitation with the stations deteriorating and the then closed Dean Street visible. There is a connection with the Brighton Line. Trains usually meet at Botanic Garden, the only 2 track station on the line.
There are currently 4 stops on this line, as two of the existing stations, Dean Street and Consumers Park closed — Dean Street in 1995 due to low paid fare entrance and fare beating, and Consumers Park (Botanic Garden) in 1928, although it was replaced by the current Botanic Garden station 5 blocks to the north.
The MTA had proposed abandoning the line, but due to community opposition to the plan, the line was completely rebuilt and renovated in 1998–99. During renovation, a temporary shuttle bus and the B48 replaced shuttle service.