Spain is investigating a deadly high-speed train collision near Urda in the Toledo region, with possible human error emerging as a key line of inquiry. The crash occurred when a Renfe AVE train struck the rear of a stationary Iryo train after a reported signalling system failure. Investigators are examining whether an operator at Madrid’s Atocha control centre mistakenly authorised the train to proceed. The exact sequence of events and the cause of the collision have not yet been confirmed.