Ii-Bumpers zinemisebenzi yokukhusela ukhuseleko, umhlobiso wesithuthi, kunye nokuphuculwa kweempawu ze-aerodynamic zesithuthi. Ukusuka kwindawo yokujonga ukhuseleko, xa kwenzeka ingozi yengozi yesantya ephantsi, 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.
Kwangaxeshanye, ukuze kuncitshiswe ukwenzakala kubahlali bemoto xa kukho ingozi yokungqubana kwecala, i-bumper yocango idla ngokufakwa kwimoto ukuze kuphuculwe amandla okuchasana nokungqubana komnyango wemoto. Le ndlela iyasebenza, ilula, kwaye inotshintsho oluncinci kwisakhiwo somzimba, kwaye isetyenziswe ngokubanzi. Ukufakwa kwe-bumper yocango kukubeka imiqadi yentsimbi ephezulu ethe tyaba ngokuthe tye okanye ngokutyibilikayo kwiphaneli yomnyango wocango ngalunye, edlala indima ye-bumpers yangaphambili nasemva kwemoto, 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.