ibiziga byumani igice cyingenzi cyikinyabiziga icyo aricyo cyose. Izi mpeta zikozwe mubyuma bikomeye kandi byashizweho kugirango bitange inkunga kumapine. Ibyuma byuma byizewe kandi biramba, bigatuma bahitamo gukundwa nabafite ibinyabiziga. Muri iki kiganiro, tuzaganira byinshi kubyerekeye ibyuma byibyuma nibyiza byabyo.Uruziga rw'icyumazihenze ugereranije nubundi bwoko bwa rims, niyo mpamvu ikunze kugaragara mumodoka nyinshi. Bikozwe mubikoresho bikomeye byibyuma, bituma bashoboye gutwara imitwaro iremereye no guhangana nubutaka bubi. Ibyuma byuma nabyo biza mubunini no mubishushanyo bitandukanye, bituma abafite ibinyabiziga bahitamo uburyo bakunda. Ibyuma byicyuma ni amahitamo azwi mubafite ibinyabiziga kubera igihe kirekire, bihendutse, n'umutekano. Zirakomeye kandi zizewe, zitanga imikorere myiza kumuhanda. Ibyuma byibyuma nabyo biroroshye kubungabunga, bigatuma ishoramari rikomeye kuri nyiri modoka. Noneho, niba ushaka uruziga rushobora gutwara imizigo iremereye, kwihanganira ahantu habi, kandi rutanga ingufu za peteroli,ibyumani amahitamo meza.