Published: 17 Mar. 2026, 11:36
Updated: 17 Mar. 2026, 16:16
![The Gimpo Airport Station on Seoul subway line No. 9 is seen on July 31, 2023. [NEWS1]](https://koreajoongangdaily.joins.com/data/photo/2026/03/17/4909d408-6817-47bc-a360-502f49f31329.jpg)
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]]


