Kuisirwa kwegonhi rekumashure bumper guard ndeyekuisa akati wandei-akasimba simbi matanda akachinjika kana kutsveyama mugonhi remusuwo wega wega, iro rinoita basa rekumberi nekumashure rekuchengetedza bumper guard, zvekuti mota yese "inoperekedzwa" nekumashure. mabhampa varindi pamberi, kumashure, kuruboshwe uye kurudyi, vachigadzira "rusvingo rwemhangura uye madziro esimbi", kuitira kuti vafambi vemotokari vave nenzvimbo yakachengeteka yakanyanya. Ehe, kuisa rudzi urwu rwekumashure bumper guard pasina mubvunzo kuchawedzera mamwe mari kune vanogadzira mota, asi kune vafambi vemotokari, chengetedzo uye pfungwa yekuchengeteka ichawedzera zvakanyanya.