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Siemens' LZB, an old bomb-proof signalling system

The LZB (Linienzugbeeinflussung, in its German version), the signalling system that manages train traffic on the corridor between Madrid and Seville, is a highly tested technology that works with a proven 99.9% effectiveness since its commissioning in 1992, a contract that at the time was awarded to the German giant Siemens.

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