The extension of the tram westward from Shijō Ōmiya was built as a trolleybus line to Nishiōji Shijō in 1932, to Umezu in 1958 (replacing existing Umezu Line tram) and to Matsuobashi in 1962.
The westward expansion of the tram from Shijō Ōmiya involved converting it into a trolleybus line in 1932, replacing the existing Umezu Line tram in 1958, and extending further to Matsuobashi in 1962.