Ii-Bumpers zinemisebenzi yokukhusela ukhuseleko, umhlobiso wesithuthi, kunye nokuphuculwa kweempawu ze-aerodynamic zesithuthi.Ukusuka kwindawo yokujonga ukhuseleko, xa kwenzeka ingozi yengozi yesantya esisezantsi, imoto inokudlala indima yokukhusela ukukhusela imizimba yemoto yangaphambili nasemva;inokudlala indima ethile ekukhuseleni abahambi ngeenyawo xa kukho ingozi kubahambi ngeenyawo.Ngokubhekiselele kwimbonakalo, ihlobisa kwaye ibe yinxalenye ebalulekileyo yokuhlobisa ukubonakala kwemoto;kwangaxeshanye, i-bumper yemoto nayo inefuthe elithile le-aerodynamic.
Ngelo xesha, ukuze kuncitshiswe ukulimala kwabahlali bemoto xa kwenzeka ingozi yokungqubuzana kwecala, i-bumper yocango idla ngokufakwa kwimoto ukuze kuphuculwe amandla okuthintela ukungqubana komnyango wemoto.Le ndlela iyasebenza, ilula, kwaye inotshintsho oluncinci kwisakhiwo somzimba, kwaye isetyenziswe ngokubanzi.Ukufakwa kwe-bumper yocango kukubeka imiqadi emininzi yentsimbi ephezulu ngokuthe tye okanye ngokutyibilikayo kwipaneli yomnyango womnyango ngamnye, odlala indima ye-bumpers yangaphambili nangemuva yemoto, ukuze yonke imoto ibe ne-bumpers "yokugada" ngaphambili, ngasemva, ekhohlo, nasekunene kwicala lemoto., ukwenza "udonga lobhedu", ukwenzela ukuba abagibeli beemoto babe nommandla omkhulu wokhuseleko.Ngokuqinisekileyo, ukufaka olu hlobo lwe-bumper yomnyango ngokuqinisekileyo kuya kwandisa iindleko ezithile kubavelisi beemoto, kodwa kubahlali bemoto, ukhuseleko kunye nengqondo yokhuseleko luya kwandisa kakhulu.