Iyo yekumberi inogamuchira simba rekuita, iro rinogoverwa nebhampa rekumberi kune mabhokisi ekunyudza simba pamativi ese uye wozoendeswa kuruboshwe nekurudyi kumberi njanji, uyezve kune yakasara yemuviri chimiro.
Iyo yekumashure inobatwa nesimba rekukanganisa, uye simba rekuita rinofambiswa neiyo yekumashure bumper kubhokisi rekutora simba pamativi ese, kuruboshwe nekurudyi kumashure njanji, uyezve kune zvimwe zvimiro zvemuviri.
Yakaderera-simba inokanganisa mabumpers anogona kurarama nekukanganisa, nepo yakakwirira-simba inokanganisa mabumpers achitamba basa rekufambisa kwesimba, kupararira uye kubhuroka, uye pakupedzisira kuendesa kune zvimwe zvimiro zvemuviri, uyezve kuvimba nesimba rechimiro chemuviri kuramba. .
America haioni bumper segadziriro yekuchengetedza: IIHS muAmerica haitore bumper segadziriro yekuchengeteka, asi sechinhu chinogadzirisa kuderedza kurasikirwa kwekutsika-speed collision.Naizvozvo, kuyedzwa kwebumper kunobva zvakare pane pfungwa yekuti ungadzikisa sei kurasikirwa uye kugadzirisa mutengo.Kune mhando ina dzeIIHS bumper crash tests, dziri mberi nekumashure bvunzo dzetsaona dzemberi (speed 10km/h) uye bvunzo dzekumberi nekumashure (speed 5km/h).
