Udokotela wezilwane v Rockville ube nesilinganiso esimaphakathi — 4.7 (ngokwezilinganiso zomsebenzisi Mapich).
Sithole udokotela wezilwane Rockville emigwaqweni elandelayo: Taft Ct, Redland Rd, Nelson St, Norbeck Rd
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 5 Izinkampani, eyethulwe kuleli khasi.