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 nangasemva, ukuze yonke imoto "ipheleke" ngamabhampa ngaphambili, ngasemva, ngasekhohlo nasekunene, ukwenza "udonga lobhedu kunye nodonga lwentsimbi", ukwenzela ukuba abakhweli beemoto babe neyona ndawo ikhuselekileyo 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.
