Seoul Subway Line 9 Signal Malfunction for Over 40 Minutes... No Express Train Service

by Oh Jieun

Published 17 Mar.2026 11:49(KST)

All Sections from Gaehwa to Veterans Hospital Station

A signal malfunction occurred on Seoul Subway Line 9, causing all express trains to be suspended and only regular trains to operate.


View of a section of the Seoul subway platform. Photo by Hyunmin Kim

View of a section of the Seoul subway platform. Photo by Hyunmin Kim

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According to Seoul Metro Line 9 on March 17, a signal equipment failure occurred at the Integrated Control Center at 10:22 a.m. on March 17. As a result, all express trains between Gaehwa Station and Veterans Hospital Station are currently running as regular trains.


The signal malfunction was restored at 11:17 a.m., but express train service has not yet resumed. Currently, regular trains are operating normally.


A Seoul Metro Line 9 official stated, "Express trains will be gradually put back into service after safety is ensured."

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