Izikhungo ku Houston vula North Freeway ube nesilinganiso esimaphakathi — 3.7 (ngokwezilinganiso zomsebenzisi Mapich).
North Freeway, Houston ezitholakele — ibhangi.
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 1 inkampani, eyethulwe kuleli khasi.