Urugi rw'imodoka rugamije guha umushoferi n'abagenzi uburenganzira bwo kwinjira muri iyo modoka, no gutandukanya ikibazo kiri hanze y'imodoka, kugira ngo bigabanye ingaruka ku ruhande ku rugero runaka, kandi birinde abayirimo. Ubwiza bw'imodoka bufitanye isano kandi n'imiterere y'urugi. Ubwiza bw'urugi bugaragarira ahanini mu mikorere y'urugi yo kurwanya impanuka, uburyo rufunga neza, uburyo rworoshye bwo gufungura no gufunga urugi, ndetse birumvikana ko n'ibindi bimenyetso byerekana imikoreshereze y'ibikoresho. Kurwanya impanuka ni ingenzi cyane, kuko iyo imodoka ifite ingaruka ku ruhande, intera iri hagati y'imodoka iba ngufi cyane, kandi biroroshye gukomeretsa abayirimo.
