Ua haku mua ʻia ke ala me AREMA Standard Steel Rail. Ma hope mai, ua hoʻohana ʻia nā kaʻa hao hao, a laila kūkulu ʻia nā alahao I-like. I ka makahiki 1980, he 1435 mm (4 ft. 8(1/2) iniha ka ana maʻamau i hoʻohana ʻia e ka hapa nui o nā kaʻaahi ma ka honua nei (e nānā i ka Railway Track Geometry). ʻO nā mea ʻoi aku ka liʻiliʻi ma mua o kēia, ua kapa ʻia ʻo nā ala kaʻa haiki, a ʻo nā mea i ʻoi aku ka laulā ma mua o kēia, ua kapa ʻia ʻo ia nā alahao ākea (e nānā i ka Railway Engineering).