Gaban yana karɓar ƙarfin tasiri, wanda aka rarraba ta gaban bumper zuwa akwatunan shayar da makamashi a bangarorin biyu sannan kuma ana watsa shi zuwa hagu da dama na dogo na gaba, sa'an nan kuma zuwa sauran tsarin jiki.
Ƙarfin tasiri ya shafi baya, kuma ana watsa tasirin tasirin ta hanyar baya zuwa akwatin sha na makamashi a bangarorin biyu, zuwa hagu da dama na baya na baya, sannan zuwa sauran tsarin jiki.
Ƙarfafa tasirin tasiri mai ƙarfi na iya jure wa tasirin tasirin, yayin da ƙarfin tasirin tasirin tasiri mai ƙarfi yana taka rawa na watsa ƙarfi, watsawa da buffering, kuma a ƙarshe canjawa wuri zuwa wasu sifofin jiki, sannan kuma dogara ga ƙarfin tsarin jiki don tsayayya. .
Amurka ba ta la'akari da ƙarami azaman tsarin tsaro: IIHS a Amurka ba ta ɗaukar ƙarfi azaman tsarin tsaro, amma a matsayin na'ura don rage asarar ƙaramin sauri. Sabili da haka, gwajin bamper kuma ya dogara ne akan tunanin yadda za a rage asarar da kuma kula da kuɗi. Akwai nau'ikan gwaje-gwajen karo na biyu na IIHS, waɗanda sune gwajin haɗarin gaba da na baya (gudun 10km/h) da gwajin haɗarin gefen gaba da na baya (gudun 5km/h).