The problem is that for the passengers who aren't accustomed to the line it's difficult to understand the operation system because the type of trains or stations at which to stop varies according to the hours, and the operation routes are complicated.
時間帯によって走る列車種別や停車駅が変わることや運転系統が複雑なことから、慣れない利用者にはわかりにくいのが難点である。