Kuteteza ndi kuwongolera dera motsutsana ndi kuchulukirachulukira komanso dera lalifupi, Pomanga kukhazikitsa-monga nyumba, maofesi, zovuta zamalonda, makina amagalimoto (D curve) ndikuyika kwa mafakitale-kusintha, kuwongolera, kuteteza ndi kuwongolera mabwalo amagetsi.Komanso mu ma switch ma gear panel, njanji ndi ntchito zam'madzi.