Regarding the operation from Takatsukishi Station and to the east, until 2001, all trains were less than seven cars long (because Minase Station and Kanmaki Station couldn't accommodate trains having more than seven cars).
高槻市以東に関しては2001年までは全列車7両編成以下だった（これは水無瀬、上牧の各駅が7両編成対応ホームであったため）。