About suspension of operation of municipal subway blue line (return driving) (first report)

　At 7:15 pm on December 19, an abnormal current between Isezaki-Chojamachi Station and Yoshinocho Station was detected at a substation, so the operation was matched on the entire line, but at 8:04 pm Kami-Ooka Station. We carry out return operation between Shonandai Station and between Azamino Station and Yokohama Station at 8:11 pm.
　Even now, we have suspended driving between Kami-Ooka Station and Yokohama Station.
　We apologize for any inconvenience this may cause.
1 Overview of driving obstacles
　（1） Date and time of occurrence
　　　　7:15 pm Tuesday, December 19, 2023
　（2） Location of occurrence
　　　　Municipal Subway Blue Line Between Isezaki-Chojamachi Station and Yoshinocho Station
　（3） Progress, etc.
　　　　7:15 pm Detected an abnormal current between Isezaki-Chojamachi Station and Yoshinocho Station at a substation.
　　　　7:16 p.m. Deadline operation
　　　　8:4 pm Return operation starts back between Kami-Ooka Station and Shonandai Station
　　　　8:11 p.m. Returns from Azamino Station and Yokohama Station
2 Causes
　　We are currently investigating.