Bumper ine basa rekuchengetedza dziviriro, kushongedza uye kugadzirisa maitiro eaerodynamic yemotokari. Kubva pane yekuchengetedza maonero, mota inogona kuridza buffer chikamu chechiitiko cheyakaderera-mhanya-specess collision tsaona, kuchengetedza kumberi uye kumashure kwemotokari. Muchiitiko chetsaona nevanofamba netsoka vanogona kutamba rimwe chinzvimbo mukudzivirira vanofamba netsoka. Kubva pakuonekwa, ino kushongedza uye inova chikamu chakakosha chekushanduka kwemotokari chitarisiko. Panguva imwecheteyo, mabumi emotokari ane zvakare imwe yeAerodynamic Earth.
Panguva imwecheteyo, kuitira kuti uderedze kukuvadzwa kwevanogara mune imwe nyaya yekukanganisa tsaona, mota dzinowanzove dzakashongedzerwa nemapepa ekuvandudza murwi wehondo. Iyi nzira inoshanda, yakapusa, kushandurwa kudiki kune muviri chimiro, yakashandiswa zvakanyanya. Pakutanga kwa1993 Shenezhen International mota Exhibice, gonhi remotokari rakavhurwa kufumura bundu revateereri kuti vaone, kuratidza maitiro ayo akanaka ekuchengetedza.
Kuiswa kwemusuwo bumper kuri mumusuwo wega wega wega wega. Ehezve, kuisirwa kwesuo remusuwo kwakadaro hakuzive pasina mubvunzo kunowedzera mamwe emari kune vanogadzira mota, asi kune vagari vemota, kuchengetedzeka uye pfungwa yekuchengetedza ichawedzera zvakawanda.
