 The entire line has been planned to be converted for subway service going back to the 1920s blueprints of the Independent Subway System (IND); the portion south of Liberty Avenue was converted into the IND Rockaway Line in 1956, while the northern portion remains inactive.Some local mass transit advocates have urged that the northern portion be refurbished and reopened as a faster rail link between Queens and Manhattan.A Select Bus Service bus rapid transit corridor is planned along the corridor, which would attempt to replicate rapid transit service with the current Q52 and Q53 routes.