A high-speed train collision south of Toledo, Spain, that killed at least 69 people has been attributed primarily to human errors by rail traffic controllers, according to Transport Minister Óscar Puente. The accident occurred on Wednesday morning along a central rail corridor and involved a Renfe-operated train colliding with a stationary Iryo express service on the same track. A judicial investigation has been launched to examine how the incident took place despite indicators showing the presence of the halted train.
The crash followed the failure of the automatic safety signalling system, known as the LZB, at 8:31 a.m. This system normally regulates train signals and can apply brakes automatically to prevent collisions. Its outage triggered emergency protocols that halted all traffic in the affected rail sector, requiring manual coordination by controllers in Madrid. Under these circumstances, trains are supposed to proceed only at reduced speeds of around 25 mph to ensure safe stopping distances. However, the trailing Renfe train was cleared to resume at normal speeds, reportedly up to 124 mph, five minutes after the stoppage.
Complicating the situation, the Iryo train was authorized to move shortly after, but it experienced a mechanical failure and remained stalled on the track. At 8:48 a.m., the Iryo driver informed control staff that the train was stopped. Despite this, controllers did not halt the approaching Renfe train or revoke its clearance. The manual clearance given to the Iryo service caused signals to turn green behind it, misleading the Renfe driver into believing the track ahead was clear when the collision occurred.
Minister Puente acknowledged the clear view operators had of the unfolding situation but questioned why no preventive action was taken during the 17-minute window prior to the crash. He emphasized that while protocol was bypassed due to the emergency, technicians had multiple chances to stop the Renfe service before impact. However, he declined to assign individual blame and insisted he will remain in his post to oversee the ongoing investigation.
The Toledo disaster is Spain’s deadliest rail crash in more than a decade and comes less than a year after another fatal rail accident claimed over 40 lives in January. Railway unions have criticized the transport ministry, alleging that control rooms suffer from staffing shortages and rely on outdated technology. Minister Puente rejected these claims, stating that the Madrid operations center was properly staffed and funded on the day of the accident. He also defended the LZB signalling system, indicating that although it experienced approximately 170 outages this year, mostly due to vandalism, theft, and scheduled maintenance, its overall performance met European standards ahead of a planned upgrade next year.
Facing increasing pressure, especially with national elections approaching, Puente announced an emergency package of technological improvements aiming to reduce dependence on manual decisions in train traffic control. Opposition parties have called for his resignation, but he reiterated his commitment to remain in office during the investigation process. Meanwhile, dozens of injured passengers remain hospitalized, with 17 in intensive care, as emergency services continue to respond to the aftermath of the crash.