Gukata disiki ya TBM nibice bikomeye bica urutare byimashini zose zisa-maso yuzuye, kugena neza neza, igiciro, n'umutekano muri tunneling ikomeye. Iyi ngingo ikubiyemo imiterere yibanze (gutter impeta, ibirindiro, sisitemu yo gufunga), uburyo bwo kumena urutare, uburyo bune busanzwe bwo kwambara, n'ibikorwa byiza byo kubungabunga umurima - mugihe byerekana inzira zigaragara mubikoresho byo kurwanya imyenda myinshi, Igishushanyo mbonera, hamwe na sisitemu yo gukurikirana ubwenge.