Isitolo sezingubo ezisetshenzisiwe v Rockville ube nesilinganiso esimaphakathi — 3.8 (ngokwezilinganiso zomsebenzisi Mapich).
Sithole isitolo sezingubo ezisetshenzisiwe Rockville emigwaqweni elandelayo: Parklawn Dr, Rockville Pike, Boiling Brook Pkwy
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 3 Izinkampani, eyethulwe kuleli khasi.