I-JIS Standard Steel Rail iqulunqwe ikakhulu yintloko, unyawo, amalungu angaphakathi kunye nomphetho. Intloko yeyona ndawo iphezulu yomzila kaloliwe, ebonisa imilo ethi "V", esetyenziselwa ukukhokela indawo ehambelanayo phakathi kweereyili zamavili; unyawo yeyona ndawo isezantsi kaloliwe kaloliwe, ebonisa imilo flat, esetyenziselwa ukuxhasa ubunzima bempahla kunye noololiwe; Ingaphakathi isakhiwo sangaphakathi umzila kaloliwe, kuquka ezantsi kaloliwe, pads ukothuka-absorbing, imivalo tie, njl, nto leyo enokwenza umzila womelele, lo gama ikwadlala indima yokufunxa ukothuka nokugcina ukunyamezelana; inxalenye emphethweni inxalenye emphethweni kaloliwe kaloliwe, evezwe ngaphezu komhlaba, ikakhulu isetyenziselwa ukusasaza ubunzima kaloliwe kwaye kuthintelwe ukhukuliseko uzwane kaloliwe.