Overview
- The early-morning failure led JR East to suspend the Yamanote and Keihin-Tohoku lines, with smoke reported from track-side equipment near Tamachi.
- Roughly 673,000 passengers were affected as parts of the network remained halted for up to nine hours.
- Passengers were evacuated from stranded trains and guided along tracks under the supervision of firefighters and railway staff.
- Operations have been gradually restored, though delays and knock-on disruptions persisted as recovery and investigation continued.
- Tokyo Disney Resort experienced unusually dense entry lines, delayed arrivals, and reported cancellations and ticket refunds as guests struggled to reach Maihama.