What the LZB signalling system is, a key piece in the deadly Toledo train crash

TechnologyInternationalEL PAÍSOct 28, 2026, 7:59 AM35 s readAI summary

The Madrid-Seville high-speed line, where two trains collided this Wednesday between Mora and Orgaz and Urda (Toledo), uses the German LZB system, which continuously monitors train speed and transmits traffic instructions to the driver's cab. When the automated system fails, control becomes manual. Early hypotheses point to "human error by an Adif operator amid a failure of the main signalling system." The line is replacing LZB with the European ERTMS.

In 35 seconds

LZB monitors speed and sends traffic instructions to the cab; if it fails, control becomes manual.
Early hypotheses point to human error by an Adif operator amid a failure of the main signalling system.
The Madrid-Seville line, opened in April 1992, is replacing LZB with the European ERTMS system.

Read the full story at EL PAÍS

IASummary generated by artificial intelligence from a story by EL PAÍS. It may contain errors: the original source prevails.

ferrocarril
Adif
señalización
ERTMS
España

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What the LZB signalling system is, a key piece in the deadly Toledo train crash

In 35 seconds

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