First, the numbering of routes and lines: Keihan Bus designated its Uji-Yodo Route as Route No. 11 (a looping-back service from midway point was designated as Route No. 11A) and the Yamazaki-Uji Route as Route No.12 (abolished in the early 1980s), and Keihan Uji Kotsu designated its Uji-Yodo Route via Okubo as Line No.21, the same route via Ogura as Line No.31 and its sectional services between Yodo and Ichida as Line No.32.
まず、系統番号(バス)の設定（京阪バスは淀宇治線は11号経路（途中折返しは11A号経路）、山崎宇治線（1980年代初期頃に廃止）は12号経路。京阪宇治交通は大久保経由が21系統、小倉経由が31系統、淀～市田の区間運転系統が32系統となる）。