Tufafin yana da ayyuka na kariyar aminci, yin ado da abin hawa da haɓaka halayen motsin motsin abin hawa. Dangane da aminci, abin hawa na iya taka rawan buffer idan akwai haɗarin haɗari mara sauri kuma yana kare gaba da baya; Yana iya ba da kariya ga masu tafiya a ƙasa idan akwai haɗari tare da masu tafiya. Dangane da bayyanar, yana da kayan ado kuma ya zama muhimmin sashi don yin ado da bayyanar motoci; A lokaci guda kuma, motar motar motar kuma tana da wani tasiri na aerodynamic.
A lokaci guda kuma, don rage raunin da fasinjojin ke samu a yayin da wani hatsarin ya faru, yawanci ana sanya ƙofa a kan motar don haɓaka ƙarfin tasiri na kofa. Wannan hanya tana da amfani kuma mai sauƙi, tare da ɗan canji ga tsarin jiki, kuma an yi amfani dashi sosai. Tun a baje kolin motoci na Shenzhen na shekara ta 1993, Honda Accord ya bude wani bangare na kofa don fallasa kofar shiga ga masu sauraro don nuna kyakkyawan yanayin tsaro.
Shigar da bumper ɗin ƙofar shine sanya katakon ƙarfe masu ƙarfi da yawa a kwance ko ba daidai ba a cikin ƙofar kofa na kowace kofa, wanda ke taka rawar gaba da ta baya, ta yadda motar gabaɗaya tana "rakiya" ta hanyar bumpers a gaba. na baya, hagu da dama, suna kafa "bangon jan karfe da bangon ƙarfe", ta yadda fasinjojin motar su sami iyakar tsaro. Tabbas, shigar da irin wannan shingen kofa ba shakka zai kara yawan farashi ga masu kera motoci, amma ga fasinjojin mota, aminci da kwanciyar hankali za su kara yawa.
