The failure of the signaling system left everything in the hands of the control center

The Madrid-Sevilla line, using outdated technology, faced a signaling system failure leading to a tragic accident. The safety system designed to prevent collisions failed, forcing reliance on a rudimentary backup system. Despite a red signal and an occupied track, the control center mistakenly instructed the train to proceed, resulting in a collision. This incident highlights ongoing issues with the line's infrastructure, including frequent failures and cable thefts. The line is undergoing modernization to implement a more advanced signaling system, but until completed, safety remains a concern.