Tokyu Toyoko Line service was suspended between Shibuya and Jiyugaoka stations on Saturday after smoke emerged from a train battery [1].
The disruption affected one of Tokyo's busiest commuter arteries, creating immediate travel delays for thousands of passengers during the afternoon hours. Because the incident involved a battery, a critical component of the train's power system, authorities prioritized a complete halt of operations to ensure passenger safety.
The incident occurred at Nakameguro Station. Reports on the exact timing vary, with some sources stating the smoke was confirmed shortly after 3 p.m. [2] and others noting it happened before 3:30 p.m. [3].
The Tokyo Fire Department said it confirmed smoke coming from the battery located in the lower section of a train that was stopped at the station. Firefighters arrived on the scene to conduct extinguishing operations [1].
Tokyu Corporation spokespeople said the smoke was detected from the vehicle at Nakameguro Station [2]. Station staff and police provided additional information to assist the emergency response. Despite the smoke and the emergency intervention, officials said there were zero injuries [1].
Service remained suspended on both the inbound and outbound lines between Shibuya and Jiyugaoka stations [2]. As of the latest reports, the time for the resumption of service remains undecided [1].
“Smoke was confirmed coming from the battery located in the lower section of a train”
This incident highlights the operational vulnerabilities of battery-dependent rail systems in high-density urban environments. While no injuries occurred, the total suspension of service between two major hubs, Shibuya and Jiyugaoka, demonstrates how a single component failure can paralyze a critical transit corridor, necessitating rigorous safety protocols over immediate service restoration.
