Izikhungo ku Rock Island vula 4th Ave ube nesilinganiso esimaphakathi — 4.6 (ngokwezilinganiso zomsebenzisi Mapich).
4th Ave, Rock Island ezitholakele — umsebenzeli wokuqashiswa kwemoto, ibhangi futhi ezinye izikhungo.
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 4 Izinkampani, eyethulwe kuleli khasi.