Hankaku Railway was nationalized in 1907 and its railway line, including the portion under government control, was called the Hankaku Line; however, as the section on the Sanin Main Line between Kyoto and Izumoimaichi (currently Izumo City) was opened to traffic in 1912, the sections between Kanzaki (currently Amagasaki) and Fukuchiyama and between Tsukaguchi and Amagasaki became known as the Fukuchiyama Line.
阪鶴鉄道は1907年に国有化され、官設区間とあわせて阪鶴線と呼ばれていたが、山陰本線の京都～出雲今市（現在の出雲市）間が1912年に開通したのを機に、神崎（現在の尼崎）～福知山間、塚口～尼ヶ崎間が福知山線となった。