Owing to the structural restriction of Yodoyabashi Station (it has one platform and three tracks, therefore Platform 1 and Platform 4 have to share the same line), the line as a whole is operated under a tight time schedule.
淀屋橋駅（1面3線だが1番線と4番線が同じ線を使う）のホーム構造が災いして、全体的に余裕のないダイヤになっている。