Ummeli v Houston ube nesilinganiso esimaphakathi — 3.8 (ngokwezilinganiso zomsebenzisi Mapich).
Sithole ummeli Houston emigwaqweni elandelayo: S Main St, N Loop W, N Shepherd Dr, Hamilton St, S Sgt Macario Garcia Dr, Katy Fwy, Bissonnet St, Heights Blvd, N Featherwood Dr, Northwest Fwy, Telephone Rd
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 12 Izinkampani, eyethulwe kuleli khasi.