Overview

• Tokyu Electric Railway said a signal-setting flaw caused the ATC to show green to an inbound train at Kajigaya Station, allowing it to enter the platform before colliding on October 5.
• The company traced the error to work done at the station in 2015, stating the misconfiguration went undetected for about ten years.
• An out-of-service train had stopped roughly 23 meters short of its intended position after overspeed-triggered braking, leaving its first car protruding onto the main line.
• There were no injuries, but about 1,107 trains were canceled on October 5–6 with roughly 652,100 passengers affected, and regular timetables resumed on October 7.
• President Seiichi Fukuda apologized at a press conference and pledged thorough measures to prevent a recurrence while internal and regulatory investigations proceed.