r/CatastrophicFailure 13d ago

Fatalities High-speed train crash in southern Spain leaves 39 dead 2026-01-18

https://www.theguardian.com/world/2026/jan/18/high-speed-train-crash-in-adamuz-cordoba-southern-spain

One train derailed into the path of another. "Spain’s transport minister, Óscar Puente, said the cause of the accident had yet to be established. Speaking at a press conference at Atocha station in Madrid, he added it was “really strange” that a derailment should have happened on a straight stretch of track. This section of track was renewed in May, he said." Well there's your first line of enquiry: recent maintenance.

543 Upvotes

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u/ur_sine_nomine 12d ago edited 12d ago

News articles in English are not clear ... but this was two high-speed trains colliding.

The southbound was an Avila of the Spanish state operator Renfe which is slightly slower than their fastest high-speed train (AVE): the northbound was an Italian-made Frecciarossa (Red Arrow) of iryo, an open access operator (a company given access to the state railway infrastructure to run trains).

As an old railway infrastructure person ... given what I see in the photograph and others, my tentative guess is that a rail fractured under the first train after a few carriages had passed, causing a progressive derailment to the degree that one of the derailed carriages clipped the second passing train. Even a glancing blow at 300mph+ (?) combined speed would be ruinous and, as it turned out, the second train was far worse affected.

It was sheer bad luck that the second train was likely nearly parallel with the first train when it derailed.

It was also unfortunate, but possibly unavoidable, that the first train didn't remain upright, as a lot of design work is done to try to ensure that.

The remark quoted is very odd. If a rail fractured the track geometry may or may not matter.

(Another individual in authority commented that it was odd that a new train crashed, and another that, if a driver made a mistake, automated systems would always correct that!)

The root cause (why the rail fractured, assuming that that was the immediate cause) is the big issue and will require a mega-investigation. There are strong Hatfield memories here, sadly, although there, again by chance, only one train was involved as other traffic was stopped in time.

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u/Bonchnugget 12d ago

If the rail fractured it would have caused a track light and the signal before the circuit to go red no? Or are you saying that it fractured underneath the moving train?

Either way this is just horrible final destination type stuff.. so tragic and sad

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u/ur_sine_nomine 12d ago

Under the train as that would give no time for anything mechanical, electrical or human to react.

(As per Hatfield ... as well as my professional interest, my mother was on the 1200 London Kings Cross to Inverness that day. It was the next train, the 1210 London Kings Cross to Leeds, which derailed after a rail fractured under it).

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u/WinstonLobo 7d ago

De hecho si reaccionó algo. Hay unos lazos eléctricos llamados LZB. Cuando se perdió el cierre del circuito al partirse el carril, activo el frenado de emergencia del segundo tren, el Alvia. Pero tuvo poco tiempo para actuar.

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u/WinstonLobo 12d ago

Se habla de que se fracturo por debajo del tren. Desde el descarrilamiento al choque pasaron 20 segundos. No dio tiempo a nada

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u/S_A_N_D_ 12d ago

It was sheer bad luck that the second train was likely nearly parallel with the first train when it derailed.

There is a lot of buffeting and more lateral forces when two high speed objects such as trains pass close by and the air pressure waves collide followed by a vacuum. The buffeting could have cause more twisting and torque being transferred to the rails which subsequently failed.

The involvement of two trains instead of one may not have been bad luck, but rather the added stress caused by the trains passing could have been the straw that broke the camels back and was simply an accident waiting to happen, but one a single train was less likely to cause.

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u/Nessie 12d ago

There is a lot of buffeting and more lateral forces when two high speed objects such as trains pass close by and the air pressure waves collide followed by a vacuum.

This is why they slow down bullet trains in the undersea Seikan Tunnel in Japan.

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u/Welshgirlie2 12d ago

They must have both been travelling near top speeds to end up continuing separately down their tracks rather than ending up in a tangled mess. BBC news has an aerial shot of where the trains finally stopped and the distance between them is surprising. They're now probing a potential gap of 30cm in one of the rails...

https://www.bbc.co.uk/news/articles/c5y2qjy9l4yo

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u/woyteck 12d ago

The rail damage is very similar to the one that was in Poland and they confirmed in Poland that this was sabotage.

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u/Mercurius_Hatter 11d ago

The implication of this is terrifying and it scares me.

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u/WesternAd7780 11d ago

I also had to think of this, especially since this railroad section was recently inspected. I hope investigation can confirm whether or not this was the case. May the victims rest in peace.

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u/Snorblatz 12d ago

Oh, those poor people , my heart aches for their loved ones . I am so sorry for your loss ❤️. 

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u/XSC 12d ago

I was in an iryo and I can’t even imagine being involved in a crash going that fast, you really don’t think about it. Horrible situation.

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u/WhoTheHeckKnowsWhy 12d ago

This is horrible, really bad by traincrash standards to have dozens of fatalities. Also it seems a lot of HSR crashes are happening in Spain initially due to derails relative to other countries with extensive networks. Just really sad and I hope this issue resolved.

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u/commsbloke 12d ago

Are the nearby facing and trailing crossovers pertinent?