Iimpompu ezithe tyaba ezithe tyaba zihambisa ukusebenza okuphezulu kokuhamba, ibhalansi ezinzileyo ye-hydraulic, kunye nokusebenza okuphantsi kokungcangcazela, ukwenza kufanelekile ukubonelelwa kwamanzi kamasipala, ukujikeleza kwemizi-mveliso, kunye neenkqubo zothutho ezinkulu.