Ibhampa inemisebenzi yokuvikela ukuphepha, ukuhlobisa imoto kanye nokwenza ngcono izici ze-aerodynamic zemoto. Mayelana nokuphepha, imoto ingadlala indima yesivimbeli uma kwenzeka ingozi yokushayisana kwesivinini esiphansi futhi ivikele umzimba wangaphambili nowangemuva; Ingavikela abahamba ngezinyawo uma kwenzeka kuba nezingozi nabahamba ngezinyawo. Mayelana nokubukeka, kuhlobisa futhi sekuyingxenye ebalulekile yokuhlobisa ukubukeka kwezimoto; Ngesikhathi esifanayo, i-bumper yemoto nayo inomphumela othile we-aerodynamic.
Ngesikhathi esifanayo, ukuze kuncishiswe ukulimala kubagibeli uma kwenzeka kuba nengozi engaseceleni, ubhampa wesicabha ngokuvamile ufakwa emotweni ukuze kuthuthukiswe amandla omphumela wokunqanda ukushayisana komnyango. Le ndlela iyasebenza futhi ilula, inoshintsho oluncane ekwakhekeni komzimba, futhi iye yasetshenziswa kabanzi. Kusukela ngo-1993 eShenzhen International Automobile Exhibition, iHonda Accord yavula ingxenye yomnyango ukuze iveze ubhampa wesicabha kubabukeli ukukhombisa ukusebenza kahle kwayo kwezokuphepha.
Ukufakwa kobhampa womnyango ukubeka imishayo eminingana yensimbi enamandla aphezulu ivundlile noma igobile ephaneli lomnyango ngamunye, elidlala indima yobhampa wangaphambili nangemuva, ukuze yonke imoto "iphelezelwe" obhampa ngaphambili, ngemuva, kwesokunxele nakwesokudla, ukwakha "udonga lwethusi nodonga lwensimbi", ukuze abagibeli bezimoto babe nendawo yokuphepha ephezulu. Yiqiniso, ukufaka lolu hlobo lwe-bumper emnyango ngokungangabazeki kuzokwandisa izindleko ezithile kubakhiqizi bezimoto, kodwa kubagibeli bezimoto, ukuphepha nomuzwa wokuphepha kuzokhula kakhulu.
