Itara rinini rya feri rikunze gushyirwa hejuru y'inyuma y'imodoka, ku buryo imodoka igenda inyuma byoroshye kubona imbere y'iferi y'imodoka, kugira ngo hirindwe impanuka yo mu gice cy'inyuma. Kubera ko imodoka isanzwe ifite amatara abiri ya feri ashyizwe inyuma y'imodoka, rimwe ibumoso n'irindi iburyo.

Rero itara rya feri nini ryitwa itara rya feri rya gatatu, itara rya feri nini, itara rya feri rya gatatu. Itara rya feri nini rikoreshwa mu kuburira ikinyabiziga inyuma, kugira ngo hirindwe kugongana n'inyuma.

Ibinyabiziga bidafite amatara maremare ya feri, cyane cyane imodoka ntoya zifite chassis ntoya iyo zifata feri bitewe n'aho itara ry'inyuma rihagaze, ubusanzwe urumuri rudahagije, ibinyabiziga bikurikira, cyane cyane abatwara amakamyo, bisi na bisi zifite chassis nini rimwe na rimwe bigorana kubibona neza. Kubwibyo, akaga gahishe ko kugongana inyuma ni kanini cyane. [1]

Ibisubizo byinshi by’ubushakashatsi bigaragaza ko amatara menshi ya feri ashobora gukumira no kugabanya ingaruka zo kugongana kw’inyuma. Kubwibyo, amatara menshi ya feri akoreshwa cyane mu bihugu byinshi byateye imbere. Urugero, muri Leta Zunze Ubumwe za Amerika, nk’uko amategeko abiteganya, imodoka zose ziherutse kugurishwa zigomba kuba zifite amatara menshi ya feri kuva mu 1986. Amakamyo yose yoroheje yagurishijwe kuva mu 1994 agomba kandi kuba afite amatara menshi ya feri.