Ummeli v Houston ube nesilinganiso esimaphakathi — 5 (ngokwezilinganiso zomsebenzisi Mapich).
Sithole ummeli Houston emigwaqweni elandelayo: Southwest Fwy, Westcott St, Kirby Dr, Yoakum Blvd, Gulf Fwy, Franklin St, S Main St, N Loop W, Fountain View Dr, Katy Fwy
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 12 Izinkampani, eyethulwe kuleli khasi.