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Den-en-toshi Line Service Restored After Collision, With ATC Under Investigation

Officials are examining a suspected ATC lapse tied to a trainee-run out-of-service movement.

Overview

  • Tokyu resumed full operations around midnight on Oct. 7 and ran normal timetables from the first trains after a shutdown that began the morning of Oct. 6.
  • Investigators say an out-of-service 10-car train stopped short in a siding, leaving its last car protruding into the main line where an inbound local struck it.
  • The incoming 10-car local carried about 149 passengers and was traveling roughly 48 km/h when it hit the protruding car; no passengers or crew were injured.
  • A trainee was at the controls of the out-of-service movement with a driver and conductor aboard, and an overrun-prevention signal and automatic braking halted the train short of its mark.
  • The Japan Transport Safety Board is inspecting damage and vehicles and interviewing crews, as MLIT orders Tokyu to determine causes and propose preventive measures; about 1,107 trips were canceled, affecting roughly 652,100 people.