Amabhampa anemisebenzi yokuvikela ukuphepha, ukuhlobisa imoto, kanye nokwenza ngcono izici ze-aerodynamic zemoto.Ngokombono wezokuphepha, lapho kwenzeka ingozi yokushayisana kwesivinini esiphansi, imoto ingadlala indima yokuvimbela ukuvikela imizimba yemoto yangaphambili nangemuva;ingadlala indima ethile ekuvikeleni abahamba ngezinyawo uma kwenzeka ingozi nabahamba ngezinyawo.Ngokubukeka, kuhlobisa futhi sekuyingxenye ebalulekile yokuhlobisa ukubukeka kwemoto;ngesikhathi esifanayo, i-bumper yemoto nayo inomphumela othile we-aerodynamic.
Ngesikhathi esifanayo, ukuze kuncishiswe ukulimala kwabagibeli bemoto uma kwenzeka ingozi yokushayisana eceleni, ubhampa wesicabha uvamise ukufakwa emotweni ukuze kuthuthukiswe amandla omphumela wokunqanda ukushayisana komnyango wemoto.Le ndlela iyasebenza, ilula, futhi inoshintsho oluncane ekwakhekeni komzimba, futhi isetshenziswe kabanzi.Ukufakwa kobhampa wesicabha ukubeka imishayo eminingana yensimbi enamandla aphezulu ivundlile noma igobile ephaneli lomnyango womnyango ngamunye, elidlala indima yobhampa bangaphambili nangemuva bemoto, ukuze yonke imoto ibe nobhampa "abagadile" ngaphambili, ngemuva, kwesokunxele, nakwesokudla semoto., ukwakha "udonga lwethusi", ukuze abagibeli bezimoto babe nendawo yokuphepha ephezulu.Yiqiniso, ukufaka lolu hlobo lwe-bumper emnyango ngokungangabazeki kuzokwandisa izindleko ezithile kubakhiqizi bezimoto, kodwa kubagibeli bemoto, ukuphepha nomuzwa wokuphepha kuzokhula kakhulu.