Ukukhanya okuphezulu kwebhuleki ngokuqhelekileyo kufakwe kwindawo ephezulu ngasemva kwesithuthi, ukwenzela ukuba isithuthi esiqhuba ngasemva kube lula ukubona umphambili we-brake yesithuthi, ukukhusela ingozi yangasemva. Ngenxa yokuba i-avareji yemoto sele inezibane ze-brake ezimbini ezifakwe ekupheleni kwemoto, enye isekhohlo kunye neyokunene.
Ke isibane sebrekeki esiphakamileyo sikwabizwa ngokuba sisibane sesithathu sebrake, isibane sebhuleki ephezulu, isibane sesithathu sokuqhobosha. Isibane sebhuleki esiphakamileyo sisetyenziselwa ukulumkisa isithuthi ngasemva, ukunqanda ukungqubana ngasemva.
Izithuthi ezingenazo izibane eziphezulu ze-brake, ngokukodwa iimoto kunye neemoto ezincinci ezine-chassis ephantsi xa zibhula ngenxa yesikhundla esiphantsi sokukhanya kwe-brake yangasemva, ngokuqhelekileyo ukukhanya okwaneleyo, ezi zithuthi zilandelayo, ngakumbi abaqhubi beelori, iibhasi kunye neebhasi ezine-chassis ephezulu ngamanye amaxesha kunzima ukubona ngokucacileyo. Ke ngoko, ingozi efihliweyo yongquzulwano ngasemva inkulu ngokwentelekiso. [1]
Inani elikhulu leziphumo zophando zibonisa ukuba ukukhanya kwebhuleki ephezulu kunokuthintela ngokufanelekileyo kwaye kunciphise ukwenzeka kongquzulwano ngasemva. Ngoko ke, izibane eziphezulu zokuqhobosha zisetyenziswa kakhulu kumazwe amaninzi aphuhlileyo. Ngokomzekelo, eUnited States, ngokwemigaqo, zonke iimoto ezisandul’ ukuthengiswa kufuneka zixhotyiswe ngezibane eziqhoboshekayo ukususela ngowe-1986.
