Spain’s high‑speed train network is plagued by old signalling systems. They may have caused the deadly crash

Shortly after 8am, two high-speed trains set off from Madrid’s Atocha station bound for Seville Santa Justa, but neither reached their destination. A failure in the LZB system – an automatic safety, signalling and protection system that monitors trains’ movement and activates automatic emergency braking – triggered a chain of events that led to a