Subway Line No. 9 express train services resume following signal failure

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Published: 17 Mar. 2026, 11:36 Updated: 17 Mar. 2026, 16:16

LIM JEONG-WON
[email protected]

The Gimpo Airport Station on Seoul subway line No. 9 is seen on July 31, 2023. [NEWS1]

Express train services on Seoul Subway Line No. 9 resumed operations on Tuesday after being suspended for about two hours due to a signal failure.

The signal failure was detected around 10:22 a.m. At the time, all express trains were converted to regular trains. The express train service resumed at around 12:17 p.m. after emergency repair work began about an hour before at 11:17 a.m.

“We are currently identifying the exact cause of the malfunction,” an official said.

Subway Line No. 9 operates two types of trains: the regular local lines and express lines. The line is part of the Seoul Metropolitan Subway.

Update, March 17: Added details on the resumed operation.

BY LIM JEONG-WON [[email protected]]