I-bumper inemisebenzi yokukhusela ukhuseleko, ukuhombisa imoto kunye nokuphucula iimpawu ze-aerodynamic zesithuthi. Ngokuphathelele ukhuseleko, imoto ingadlala indima ye-buffer xa kwenzeka ingozi yesantya esiphantsi kwaye ikhusele umzimba wangaphambili nowangasemva; Ingakhusela abahambi ngeenyawo xa kwenzeka ingozi kubahambi ngeenyawo. Ngokuphathelele inkangeleko, iyahombisa kwaye ibe yinxalenye ebalulekileyo yokuhombisa inkangeleko yeemoto; Kwangaxeshanye, i-bumper yemoto ikwanefuthe elithile le-aerodynamic.
Kwangaxeshanye, ukuze kuncitshiswe ukwenzakala kwabakhweli xa kwenzeka ingozi ecaleni, kudla ngokufakelwa i-cango bumper emotweni ukuze komelezwe amandla okuthintela ukungqubana kocango. Le ndlela iyasebenza kwaye ilula, ayinatshintsho lingako kwisakhiwo somzimba, kwaye isetyenziswa kakhulu. Kwasekuqaleni kwi-Shenzhen International Automobile Exhibition ka-1993, i-Honda Accord yavula inxalenye yocango ukuze ibonise i-cango bumper kubaphulaphuli ukubonisa ukusebenza kwayo okuhle kokhuseleko.
Ukufakelwa kwebhampa yomnyango kukubeka imiqadi emininzi yentsimbi enamandla aphezulu ngokuthe tye okanye ngokugobileyo kwiphaneli yomnyango yomnyango ngamnye, edlala indima yebhampa yangaphambili nangasemva, ukuze yonke imoto "iphelekwe" ziibhampa ngaphambili, ngasemva, ekhohlo nasekunene, zenze "udonga lobhedu nodonga lwesinyithi", ukuze abakhweli bemoto babe nendawo ekhuselekileyo ephezulu. Kakade ke, ukufaka olu hlobo lwebhampa yomnyango ngokuqinisekileyo kuya kunyusa iindleko ezithile kubavelisi beemoto, kodwa kubakhweli bemoto, ukhuseleko kunye nemvakalelo yokhuseleko ziya kwanda kakhulu.
