Isitolo sezilwane v Rockville ube nesilinganiso esimaphakathi — 3.7 (ngokwezilinganiso zomsebenzisi Mapich).
Sithole isitolo sezilwane Rockville emigwaqweni elandelayo: Rockville Pike, Congressional Ln, Shady Grove Rd, Veirs Mill Rd
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 4 Izinkampani, eyethulwe kuleli khasi.