A sixth route is catered towards Metro North commuters going to New York via the Harlem Line.

In February 2025, Putnam Transit announced that starting March 4, 2025, the PART 3 route would be replaced with microtransit.

[5] Until 2007, the PART 4 ran three days a week from Carmel to Jefferson Valley Mall, Cortlandt Town Center, then continuing on Route 9 through western Putnam County and then serving the commercial strip on that route in southern Dutchess County before ending at Poughkeepsie Galleria.

With the discontinuing of the PART 4, western Putnam County was left without local transit service (except for the seasonal Cold Spring trolley).

[6][7] PART has connection points with several transit agencies from adjacent areas.