Bumper yana da aikin kariyar aminci, kayan ado da haɓaka halayen motsa jiki na abin hawa. Daga ra'ayi na aminci, motar za ta iya taka rawa a cikin hadarin haɗari mai sauri, don kare jikin mota na gaba da na baya; A yayin da masu tafiya ke tafiya tare da hatsarori na iya taka wata rawa wajen kare masu tafiya. Daga bayyanar, yana da kayan ado kuma ya zama muhimmin ɓangare na bayyanar mota na ado. A lokaci guda kuma, motocin bumpers suma suna da wani tasirin iska.
Haka kuma, domin a rage barnar da jama’a ke yi wa mutanen da ke cikin hatsarin da ke faruwa a gefe, motoci galibi ana sanya su ne da tarkacen kofa don kara karfin tasirin kofofin. Wannan hanya mai amfani ne, mai sauƙi, ƙananan canji ga tsarin jiki, an yi amfani da shi sosai. Tun a shekarar 1993 baje kolin motoci na Shenzhen, an bude wata kofa ta mota don fallasa abin da masu sauraro za su gani, don nuna kyakkyawan yanayin tsaro.
The shigarwa na kofa damo ne a cikin kowace kofa na kofa farantin a kwance ko oblique da dama high ƙarfi karfe katako, taka rawar da mota gaban mota raya damo, sabõda haka, dukan mota a kusa da m "kariya", forming wani "baƙin ƙarfe". bango", ta yadda mai motar ya sami iyakar tsaro. Tabbas, shigar da irin waɗannan ƙofofin ƙofa ba shakka za su ƙara wasu farashi ga masu kera motoci, amma ga mazaunan motar, aminci da amincin za su ƙaru sosai.
