Most local trains of the Biwako Line run as through-trains between the JR Kyoto Line and the JR Kobe Line, but they also run as Rapid trains for stops west of Takatsuki Station (the western part of Kyoto in the morning and a midnight).
琵琶湖線の普通電車はそのほとんどがJR京都線からJR神戸線へと直通し、高槻以西（朝と深夜は京都以西）を快速運転している。