At around 16:40, the inbound train No. 25, which was standing between Keage and Kujoyama because its pole was off, retreated naturally due to a steep incline and collided with the following train, No. 58.
16時40分頃、上り25号車が蹴上～九条山間でポールが外れ停車中、急勾配のため自然後退し、後続の58号車に衝突。