Nyali ya mabuleki amphamvu nthawi zambiri imayikidwa pamwamba pa galimoto, kotero kuti galimoto yoyendetsa kumbuyo ikhale yosavuta kuzindikira kutsogolo kwa buleki ya galimoto, kuti ipewe ngozi yakumbuyo. Chifukwa galimoto yamba ili kale ndi magetsi awiri a mabuleki kumbuyo kwa galimoto, imodzi kumanzere ndi ina kumanja.
Kotero nyali ya brake yapamwamba imatchedwanso nyali yachitatu ya brake, nyali ya brake yayikulu, nyali yachitatu ya brake. Nyali ya brake yayikulu imagwiritsidwa ntchito kuchenjeza galimoto yomwe ili kumbuyo, kuti isagunde kumbuyo.
Magalimoto opanda magetsi amphamvu, makamaka magalimoto ndi magalimoto ang'onoang'ono okhala ndi chassis yotsika akamayendetsa chifukwa cha malo otsika a nyali yakumbuyo, nthawi zambiri kuwala sikukwanira, magalimoto otsatirawa, makamaka oyendetsa magalimoto akuluakulu, mabasi ndi mabasi okhala ndi chassis yokwera nthawi zina amakhala ovuta kuwaona bwino. Chifukwa chake, ngozi yobisika ya kugundana kumbuyo ndi yayikulu. [1]
Zotsatira zambiri za kafukufuku zikusonyeza kuti magetsi amphamvu amatha kuletsa ndikuchepetsa kugundana kwa kumbuyo. Chifukwa chake, magetsi amphamvu amagwiritsidwa ntchito kwambiri m'maiko ambiri otukuka. Mwachitsanzo, ku United States, malinga ndi malamulo, magalimoto onse atsopano ayenera kukhala ndi magetsi amphamvu kuyambira 1986. Magalimoto onse opepuka omwe agulitsidwa kuyambira 1994 ayeneranso kukhala ndi magetsi amphamvu.
