I-bumper inemisebenzi yokukhusela ukhuseleko, ukuhlobisa isithuthi kunye nokuphucula iimpawu ze-aerodynamic zesithuthi. Ngokokhuseleko, isithuthi sinokudlala indima yesithinteli kwimeko yengozi yontlitheko olukwisantya esisezantsi kwaye sikhusele umphambili nomzimba ongasemva; Inokukhusela abahambi ngeenyawo kwimeko yeengozi kubahambi ngeenyawo. Ngokubhekiselele kwimbonakalo, ihlobisa kwaye ibe yinxalenye ebalulekileyo yokuhlobisa ukubonakala kweemoto; Ngexesha elifanayo, i-bumper yemoto nayo inefuthe elithile le-aerodynamic.
Kwangaxeshanye, ukuze kuncitshiswe ukwenzakala kubakhweli xa kukho ingozi yempembelelo esecaleni, i-bumper yocango idla ngokufakwa kwinqwelo-mafutha ukuze kuphuculwe amandla okuthintela ukungqubana komnyango. Le ndlela iyasebenza kwaye ilula, kunye notshintsho oluncinci kwisakhiwo somzimba, kwaye isetyenziswe ngokubanzi. Kwangoko kwi-1993 Shenzhen International Automobile Exhibition, iHonda Accord yavula inxenye yocango ukuze iveze i-bumper yocango kubaphulaphuli ukubonisa ukusebenza kwayo kakuhle kokhuseleko.
Ukufakwa kwe-bumper yocango kukubeka imiqadi emininzi yentsimbi ephezulu ngokuthe tye okanye ngokutyibilikayo kwipaneli yomnyango womnyango ngamnye, odlala indima ye-bumper yangaphambili nasemva, ukuze yonke imoto "ikhatshwe" ngama-bumpers ngaphambili, ngasemva, ngasekhohlo nasekunene, yenze "udonga lobhedu kunye nodonga lwentsimbi", ukuze abakhweli bemoto babe nendawo enkulu yokhuseleko. Ngokuqinisekileyo, ukufaka olu hlobo lwe-bumper emnyango ngokuqinisekileyo kuya kwandisa iindleko ezithile kubenzi beemoto, kodwa kubakhweli beemoto, ukhuseleko kunye nemvakalelo yokhuseleko luya kwandisa kakhulu.
