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 extension of the tram from Shijō Ōmiya was developed as a trolleybus line connecting it to Nishiōji Shijō, later replacing the Umezu Line tram and extending to Matsuobashi.