Train drivers: problems mounting: train data recorders recovered from accidents

Investigators have recovered the black boxes from two high-speed trains that collided in central Spain, handing the devices over to police for analysis. The independent accident investigation authority, AITAT, confirmed that the data recorders are now in the possession of the Guardia Civil. These units capture all control commands, technical parameters, speed, braking behavior, reaction times, and physical actions taken by crew members, including manual overrides of safety systems. Authorities stated that the exact impact speed will only be known after these recordings are evaluated. Initial estimates place the collision velocity between 160 and 200 kilometers per hour. The disaster occurred on Wednesday morning near Urda, in the province of Toledo, approximately 130 kilometers south of Madrid. A train operated by the state railway company Renfe struck a stationary train belonging to the private operator Iryo from behind. Several carriages were completely destroyed, and others derailed, falling down a ten-meter embankment. At least 69 people died in the crash. Cleanup operations continued into Friday night, with forensic teams working to identify victims. A team of 25 forensic experts in Toledo began identifying the dead, using DNA samples from relatives where necessary. Many severely injured passengers are being treated at the University Hospital in Toledo, where King Felipe VI and Queen Letizia visited to offer condolences and thank medical staff. The focus of the inquiry has shifted toward potential human error and system failures. Media outlets published transcripts of radio communications between the train drivers and the Madrid traffic control center. According to these records, after a failure in the automatic signaling system, a control center employee instructed the driver of the moving Renfe train to resume "normal operation." This instruction was issued despite the automatic safety system remaining non-functional and another train still occupying the track. The driver asked for clarification regarding "normal speed," which the control center confirmed. However, protocols following such a system error typically limit maximum speed to 40 kilometers per hour. The Iryo driver had previously informed the control center that she could not proceed due to problems restarting her system. Transport Minister Óscar Puente described the decision to allow the Renfe train to continue as "unexplainable" and "wrong." He emphasized that while individual errors occurred, the broader systemic context must be examined. The Spanish Railway Safety Officer Antonio Tobal, representing the UGT union, noted that humans make mistakes, often stemming from system flaws or work organization issues. He highlighted the enormous increase in workload and stress within the industry. At the center of the technical scrutiny is the Line Control System, or LZB, an older German-made signaling technology installed on the Madrid-Seville route in 1992. Union leaders argued this system should have been replaced long ago due to recurring problems. It is scheduled to be swapped for the European Rail Traffic Management System, or ERTMS, which is already used elsewhere in Spain. Tests conducted on the affected section weeks before the accident reportedly revealed issues, though specific details were not fully elaborated in initial reports. The Spanish Train Drivers Association, SEMAF, called for better safety measures through a one-day strike. Spokesman Diego Martín demanded a thorough and independent investigation. He criticized the release of what he termed "distorted" audio snippets from the control room as "alarming and disrespectful." Martín stated that assigning blame does not solve tragedies, whereas investigating causes does. He warned that seeking culprits at this stage is irresponsible. The strike resulted in the cancellation of 81 percent of suburban trains in the Madrid region, with Renfe reporting a participation rate of 26.6 percent among workers. The Madrid-Seville line, the oldest in Spain's high-speed network, saw passenger numbers double since the liberalization of the rail market in 2021. Since then, two private operators have joined the state provider Renfe on the route. Experts argue that both safety protocols and infrastructure must adapt to this increased load. The condition of Spain’s railways and rolling stock is becoming a prominent issue in the upcoming election campaign. Right-wing groups organized protests outside the headquarters of the ruling Socialist Party, leading to clashes with police. Foreign Ministry officials reported that 51 foreign nationals from 23 different countries were involved in the accident. Of these, 18 were uninjured, one died, nine were injured, and information was sought regarding the status of 23 others. With the main high-speed line between Madrid and Andalusia closed, Renfe established special services using conventional tracks. Trains traveling between Madrid and Ciudad Real took approximately two and a half hours, departing from and arriving at the Madrid-Atocha Cercanias station. Road transport options were also prepared as a backup. Investigations remain in early stages. AITAT stated that all hypotheses remain open and that investigators have not yet been able to interview the train drivers or traffic control managers because their health conditions did not permit questioning. The agency declined to advance any explanation at this time, noting that its findings would be presented in a final report. The recovery of the data recorders marks a critical step in determining whether the collision resulted from mechanical failure, procedural violations, or a combination of factors.