General ụgbọ ala nwere ogidi atọ, n'ihu kọlụm (A kọlụm), n'etiti kọlụm (B kọlụm), n'azụ kọlụm (C kọlụm) si n'ihu na azụ. Maka ụgbọ ala, na mgbakwunye na nkwado, kọlụm na-arụkwa ọrụ nke oghere ọnụ ụzọ.
Kọlụm dị n'ihu bụ kọlụm njikọ aka ekpe na aka nri nke na-ejikọta elu ụlọ na ụlọ n'ihu. Kọlụm dị n'ihu dị n'etiti oghere injin na kokpiiti, n'elu enyo ekpe na aka nri, ọ ga-egbochi akụkụ nke ntụgharị ihu gị, ọkachasị maka ntụgharị aka ekpe, yabụ a na-atụle ya karịa.
Ekwesịrị iburu n'uche akụkụ nke kọlụm dị n'ihu na-egbochi anya onye ọkwọ ụgbọ ala mgbe ị na-atụle geometry kọlụm dị n'ihu. N'okpuru ọnọdụ nkịtị, ndị ọkwọ ụgbọala na-ahụ anya site na kọlụm n'ihu, binocular overlap Angle of the total is 5-6 degrees, from the driver's comfort, the smaller the overlap Angle, ka mma, ma nke a na-agụnye stiffness nke n'ihu kọlụm, ọ bụghị nanị na-enwe ụfọdụ geometric size ịnọgide na-enwe elu stiffness nke n'ihu kọlụm, ma na-ebelata anya occlusion nke ọkwọ ụgbọala akara. Onye mmebe ahụ aghaghị ịgbalị imeziwanye ihe abụọ ahụ iji nweta nsonaazụ kacha mma. Na 2001 North American International Auto Show, Sweden Volvo weputara ụgbọ ala SCC ọhụrụ ya. A gbanwere kọlụm dị n'ihu ka ọ bụrụ ihe na-egbuke egbuke, nke ejiri iko na-egbuke egbuke mee ka onye na-anya ụgbọ ala nwee ike ịhụ ụwa dị n'èzí site na kọlụm, nke mere na ebe kpuru ìsì nke ubi ọhụụ na-ebelata ka ọ dịkarịa ala.
