By stopping at every station from Moriguchishi Station eastward, the section express train not only secures the rapid and convenient service at Kadomashi Station and other stations in the vicinity, because Kadomashi Station, being a transfer station for the Osaka Monorail Line, has no other platform than one for the outbound track (for local trains), but the train also complements the service at Moriguchishi Station, at which neither express nor sub-express trains make stops in the morning; moreover, the operation of this type of train arriving at and departing from Hirakatashi Station, Korien Station and Kuzuha Station is provided.
守口市以東各駅に停車することで、大阪高速鉄道大阪モノレール線との乗り換え駅でありながら外側線（緩行線）にしかホームが無い門真市駅やその周辺の駅の速達・利便性を確保する役割を担っているほか、朝ラッシュ時には急行と準急が停車しない守口市を補完する役割も持ち、萱島発着を中心に枚方市・香里園・樟葉発着も運転される。