Iyo muchinjika-chikamu chimiro chenjanji ndeyeI-yakaita muchinjiko-chikamu ine yakanyanya kubhenda kuramba, iyo inoumbwa nezvikamu zvitatu: JIS Standard Steel Rail, njanji chiuno uye pasi njanji. Kuti njanji igone kumira zvirinani nemasimba kubva kumativi ese uye kuve nechokwadi chesimba rinodiwa mamiriro, njanji inofanira kunge iine hurefu hwakakwana, uye musoro wayo nepasi zvinofanirwa kuve zvenzvimbo yakakwana uye kureba. Chiuno nepasi hazvifanirwe kunge zvakanyanya kutetepa.