Tokyu Corporation: train collision, derailment impact nearly 650,000 passengers

Tokyu Corporation announced a train collision and partial derailment involving two Tokyu Railways trains at Kajigaya Station on the Den-en-toshi Line on Sunday, October 5, 2025, at approximately 11:04 p.m. A local service collided with a deadhead train entering a lead-in line, causing the first car of the deadhead train to partially derail. No human casualties were reported, and the Japan Transport Safety Board is investigating the cause.

The accident led to the suspension of service across the entire Den-en-toshi Line from October 5, 11:04 p.m., with outbound service resuming at 2:10 a.m. on October 6. On October 6, Den-en-toshi Line service operated only between Saginuma and Chuo-rinkan, while the Oimachi Line ran between Oimachi and Futako-tamagawa stations. Full line operations for both were restored around 12 p.m. on October 6.

In total, 1,107 trains were canceled, affecting 24,700 passengers on October 5 and 627,400 on October 6, for a total of 652,100 people. Tokyu Corporation is currently assessing the accident's impact on its consolidated financial forecast for the fiscal year ending March 2026 and will disclose any necessary updates promptly.