"왜 4칸짜리만 다니나?" 손님 없는 셔틀열차를 유지하는 이유

Six Overlapping Lines, Yet Zero Transfers? The Secret of Seoul's Most Absurd Subway Section The secret of Seoul's most mysterious "Line 2"—where a whopping six lines overlap but no one can transfer? 00:00 Intro 00:14 Line 2, but a 4-Car Train 02:43 A Route That Bypasses Everyone Without Transfers 06:40 Other Secrets of the Seongsu Branch Line #Line2