Spanish track was fractured before high-speed train disaster, report finds
Posted by Rygian 4 days ago
Comments
Comment by david-gpu 4 days ago
What do they do differently?
[1] https://en.wikipedia.org/wiki/Santiago_de_Compostela_derailm...
[2] https://en.wikipedia.org/wiki/2026_Adamuz_train_derailments
Comment by pibaker 4 days ago
Reminds me of when Malaysian airlines crashed two planes in a short period of time. It was a good time to get cheap flights from Europe to south east Asia as long as you can withstand relatives thinking you are literally going to die in their third crash.
Comment by Freak_NL 4 days ago
Comment by pibaker 4 days ago
Comment by wafflemaker 4 days ago
And up to that point Russia wasn't known to supply the separatists with an anti air system and the crew to run it.
Comment by aunty_helen 4 days ago
Comment by LorenPechtel 4 days ago
Comment by digitalPhonix 3 days ago
It absolutely did not. The RCS of an F-14 v/s an Airbus A300 is an order of magnitude different (probably 2 or 3 orders).
> There really was an F-14, just on the ground at an Iranian airbase
There was, but that’s a red herring for the root cause. Each ship’s radar independently and correctly identified and tracked the Airbus separate from the Mode 2 targets, but when communicating the track information between ships, the tracks were mixed up.
Source: The US Navy’s own account: https://www.history.navy.mil/content/history/nhhc/about-us/l...
> There was a combat camera team aboard the Vincennes, and the footage depicts considerable confusion and even ill-discipline amongst the crew (cheering, shouting, football game atmosphere) that contributed to one of the most tragic events in U.S. Navy history
Comment by edwcross 3 days ago
I'm outside the US so that's probably the cause. Is such information available elsewhere?
Comment by skissane 3 days ago
But this also works: https://archive.md/XsxT8
And also this: https://web.archive.org/web/20251208110440/https://www.histo...
Comment by avazhi 3 days ago
Don’t fly a commercial passenger jet over an active known war zone. Then you don’t even really have to think about whether the separatists below you know whether your signature looks like a fighter jet or not lol.
Never leave your safety to the vagaries of Russian incompetence or malice, surely.
Comment by oneshtein 3 days ago
Comment by avazhi 3 days ago
Comment by oneshtein 1 day ago
Comment by tim333 3 days ago
I'm not sure why Girkin would want to shot down an airliner?
Comment by peyton 4 days ago
[1]: https://www.technologyreview.com/2014/07/18/12951/how-can-a-...
[2]: https://www.washingtonpost.com/news/the-switch/wp/2014/07/18...
Comment by lostlogin 4 days ago
It absolutely matters.
Flying over a war zone with known anti aircraft missiles is quite different to flying over a low level conflict that is using small arms only.
Comment by kubanczyk 3 days ago
What was in the news at the time, and the news are still linked from https://en.wikipedia.org/wiki/War_in_Donbas#Escalation_in_Ma...
2 June 2014: "Luhansk airstrike"
14 June 2014: "A Ukrainian Air Force Ilyushin Il-76MD was shot down"
20 June 2014: "The insurgents [...] shot down a Su-25 bomber."
14 July 2014: "Ukrainian Air Force launched air strikes targeting insurgent positions across Donetsk and Luhansk oblasts. The Ukrainian government said that 500 insurgents were killed"
17 July 2014: "DPR forces shot down a civilian passenger jet, Malaysia Airlines Flight 17"
Comment by fluder_tw 3 days ago
Comment by jojomodding 4 days ago
Comment by oneshtein 3 days ago
Comment by tyre 4 days ago
Comment by kijin 3 days ago
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Comment by MaxikCZ 3 days ago
as long as you can withstand relatives thinking you are literally going to die in their second crash,
and then you die in their second crash.
Comment by schiffern 3 days ago
Comment by dinkblam 4 days ago
https://www.reuters.com/world/spains-deadly-rail-accidents-p...
Comment by david-gpu 4 days ago
> [The] stretch of track that was renovated last May and inspected on January 7.
The track had been inspected very recently. Maybe the inspection standards are inadequate?
The linked article also shows figures that are quite meaningless without context.
> [The] vast majority [of Spain's high-speed rail budget] went to new infrastructure with only some 16% earmarked for maintenance, renewal and upgrades. That compares with between 34% to 39% spent by France, Germany and Italy,
They simply can't compare those numbers as-is. Of course Spain will be spending less in maintenance as a percentage of the total budget if it's still mainly building new tracks. It's not a useful figure.
Comment by imiric 4 days ago
Spanish officials are very good at deflecting blame and playing politics. Nobody wants to be held accountable for a catastrophe. Also see the 2024 floods in Valencia; a partially preventable tragedy, followed by a whole lot of mud slinging, but zero accountability.
So while inspection standards might be inadequate, I would take anything a senior official says with a pound of salt.
Comment by db48x 3 days ago
Comment by raverbashing 3 days ago
sigh
Of course you're right
Comment by rob74 3 days ago
Conflating the maintenance budget with the money invested in new infrastructure in this way is not very useful IMHO. How much inspection/maintenance money was spent per km of (high-speed and overall) railway track would be much more informative...
Comment by Findeton 4 days ago
Comment by LorenPechtel 4 days ago
Comment by jacquesm 4 days ago
Comment by exidy 4 days ago
Comment by duskwuff 4 days ago
Comment by jacquesm 3 days ago
Comment by jacquesm 3 days ago
English has a third term like that as well called 'brazing', then there is silver solder (a high temperature version of soldering), in dutch we'd call that 'hardsolderen', whereas what the English call brazing we call oxy-acetyleen lassen (which is more of a process name by virtue of naming the ingredients).
Soldadura autogeno and Soldadura en el arco (sp?) are what I think the modifiers used in Spanish to indicate brazing and (arc) welding.
Comment by myrion 3 days ago
Comment by usr1106 3 days ago
In Germany it would be schweißen.
Comment by jacquesm 3 days ago
Comment by yread 3 days ago
So, also different with different etymology in a language from a different group (although these things were probably influenced by German)
Comment by m4rtink 3 days ago
* the first one makes it clear a something (a different material) is used to join things together
* the second one implies you melt/boil the things to join them together
Comment by wafflemaker 4 days ago
Comment by Arainach 4 days ago
Seriously, Cryptonomicon is a bizarre thing to put on this list. I like the it a lot, but none of that book takes place in Japan and the closest intersection is Japanese soldiers during World War II, with a brief participation of a single fictional Japanese company in the modern section of the book.
Comment by tyre 4 days ago
Comment by andrecarini 3 days ago
Comment by tanseydavid 3 days ago
While this protocol is not oriented toward maintaining equipment like tracks and wheels -- it does seem to be a good indicator that the Japanese deal with these systems and the safety concerns around them differently.
And their track record (pun intended) shows the result of this focus.
https://en.wikipedia.org/wiki/Pointing_and_calling
> Railways in Japan use a safety system called “pointing and calling.” This method of physically pointing toward an item to be checked while vocalizing its name was invented in Japan about 100 years ago. The combination of looking, acting, speaking and hearing reduces errors by as much as about 85%.
Comment by egl2020 3 days ago
Comment by komali2 4 days ago
I love Cryptonomicon but it engaged in that distinctly American brand of orientalism when it got into Japanese soldiers killing themselves and whatnot.
Comment by herewulf 3 days ago
My tentative conclusion is that there is something really unique about Japanese culture and there is certainly nothing wrong with that.
Comment by jacquesm 4 days ago
Comment by legitronics 4 days ago
These are actually points making the Japanese system easier to maintain. Because of smaller surface area it’s much denser.
Comment by tjwebbnorfolk 3 days ago
Comment by hibikir 4 days ago
The first was purely a matter of not upgrading the signaling in a very low speed section: The crash could have happened with regional trains too. Every engineer knew that it was unsafe and one distraction was enough to get someone killed, but Spain is still well in the middle of track expansion, so it's all the horrors of politicking. Unless you have a crash, not upgrading those signals costs nothing, but, say, the very expensive connection to Asturias was worth a lot, so iffy tradeoffs were made.
Hopefully better engineering-driven tradeoffs are made regarding track maintenance, but hey, this is Spain, not a place where we are good at efficient, reliable safety processes: See the failures in Valencia for the DANA, where the chain between the meteorologists seeing a risk that led to recommending evacuation, and the actual order of evacuation was so slow, so we ended up with 229 deaths.
Comment by ehnto 2 days ago
They run at full speed between regular train operations.
I saw one of them running on my last trip, which is said to be good luck.
Comment by numpad0 3 days ago
Also, Far East right now is also massively cash poor yet labor rich relative to the rest of the world. Everything is crazy undervalued and there are clear gaps between amounts of money changing hands vs work being done. Skilled-labor-intensive tasks are going to be much easier when cheap skilled labor is just perpetually available.
Comment by franktankbank 3 days ago
1) Can you expand on your first sentence? When you say user owned what does that mean exactly?
2) If skilled labor is undervalued does that mean those with those positions live kind of meager lives? Or what is that like?
Comment by numpad0 3 days ago
2) I mean, like, it's the place where the English loanword for "death by overwork" came from. Also, undervalued means things costing less than they are worth. Trash costing little isn't undervalued, that's more adequately valued.
Comment by franktankbank 3 days ago
Answer 1 is still not clear to me. Can you contrast it with how Spanish track is managed?
Comment by numpad0 2 days ago
I admit that I was a bit uninformed about specifics of Spanish train system in that, the rails were in fact laid by then-Spanish national rail and the operator was then-national company, but still, they don't seem like built and maintained like the BART or the NYC subway that happens to go 200mph in straight sections. That Shinkansen architecture is unique, and that is also guaranteed to be more labor intensive than how everything in most HSRs are.
Comment by s1artibartfast 3 days ago
High public competency and government capacity allows a lot to get done.
Comment by masklinn 4 days ago
Comment by Ekaros 3 days ago
This means that Shinkansen tracks are designed and build to much higher standard.
Comment by evan_a_a 3 days ago
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Comment by bell-cot 3 days ago
Which is the secret of preventing 99%+ of sudden mechanical failures of pretty much any type of infrastructure.
Comment by baq 4 days ago
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Comment by secult 3 days ago
Comment by krowek 3 days ago
You won't be the first or last asking why Russia does the thing it does. Russia is world's Dog in the Manger, why wouldn't we give it a bit of credit, though?
Comment by avazhi 3 days ago
But yeah dude, we’re all Russian shills.
Comment by clort 3 days ago
It sounds unreasonable sure, but tbh I am not convinced that the Russian government is reasonable.
Comment by avazhi 3 days ago
You can call out the Russians for being pieces of shit without making them the boogeyman for literally everything. Doing the latter just makes you seem like a conspiracy theorist.
Comment by thisislife2 3 days ago
Comment by crote 3 days ago
Russia is already doing enough damage and causing enough fear as it is. Let's not help them by baselessly give them credit for every single thing that ever happens.
Comment by smcl 3 days ago
This is roughly on par with every celebrity death over the last 4-5 years being followed by idiots commenting "vaxxed?!"
Comment by gambiting 4 days ago
Comment by rvba 4 days ago
I wonder if Dang has any tools to deal with that.
Comment by chakintosh 3 days ago
Accountability.
Comment by NewJazz 4 days ago
Japan having to build to earthquake standards, so being more robust overall? Or to specific failure modes, at least.
Comment by Animats 3 days ago
Comment by wvbdmp 3 days ago
Comment by Animats 3 days ago
BART recently got a full-speed inspection car.[1] They needed a specially built one because BART has a non-standard track gauge.
The Federal Railroad Administration has track inspection cars, but only six of them for the whole country. One was seen on CALTRAIN track.[2]
Comment by lifestyleguru 4 days ago
Hey that infrastructure looks perfectly fine and new, ahhh ok... they were going 180kmh where the speed limit was 80kmh..
Comment by pibaker 4 days ago
Comment by lifestyleguru 4 days ago
Comment by andy12_ 1 day ago
Comment by zrn900 3 days ago
These events happening 4 times in 3 days are statistically nonexistent. Even less existent is them starting to happen right on the day before a major politician in Spain visits Israel to talk about buying Israeli security and monitoring systems.
Comment by amenghra 4 days ago
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Comment by shevy-java 4 days ago
Now - Japanese mentality is strange to me, but the quality standards and thought process, are convincing.
Comment by NedF 3 days ago
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Comment by pibaker 4 days ago
> Shinkansen lines are completely separate from conventional rail: no level crossings, no shared tracks, no freight, and no interaction with slower services.
Not true.
https://www.youtube.com/watch?v=TYol11bVoNw
https://ameblo.jp/nakamurapon943056/entry-12488005292.html
> but they still tend to interact more with legacy rail networks and inherit more constraints.
Spanish high speed trains mostly run on their own tracks because of gauge differences. France and Germany are the ones who actually runs high speed trains on old tracks, a lot.
It is surprising how many upvotes you can get on the internet just by glazing the Japanese.
Comment by m4rtink 4 days ago
This is called Mini-Shinkansen: https://en.wikipedia.org/wiki/Mini-Shinkansen
This comes with limitations, as the maximum track speed on these converted lines is apparently around 130 km/h.
None of the actual Shinkansen stadard lines have level crossings.
Comment by frutiger 4 days ago
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Comment by tzs 4 days ago
But would it have generated almost the same comment 4 hours ago, when the comment was posted here?
A few months ago I posted a comment in a thread about some new law that would not have been needed if a law from many years early had not seemingly arbitrarily limited itself to some particular cases. I speculated on some reasons why the original law might have been written that way.
A couple hours later I asked an LLM about it (Perplexity) and it gave the same reasons I had guessed. I checked the links it provided to get a suitable reference if the topic ever came up again...and it turned out my comment was its source!
Comment by ronsor 4 days ago
Comment by bjourne 4 days ago
Is exactly what a text bot would say. Eloquent, but when you think about it, is just nonsense. Which operator treats HSR as "fast trains on tracks" and which does not treat it is a "tightly controlled system"?
Comment by qiqitori 4 days ago
Comment by baud147258 4 days ago
At least in France, high speed trains on older tracks won't go as fast as on the dedicated high speed tracks
Comment by virtualritz 4 days ago
That's why something like a fractured high speed rail track would never go undetected in Japan.
https://www.plassertheurer.com/en/today/stories/japanese-pre...
https://global.jr-central.co.jp/en/company/data-book/_pdf/20...
https://www.ejrcf.or.jp/jrtr/jrtr61/16_21.html
https://international-railway-safety-council.com/wp-content/...
Comment by Symbiote 4 days ago
Then the crashed train passed at 19:45.
I don't see why an overnight inspection must have caught this, it could have happened just before the 17:21 train, or even have been caused by it.
We will need to wait for the investigation to continue, and I hope Japan's rail people will not be so arrogant as to assume they can't learn something from it.
Comment by vshade 4 days ago
Comment by pmarg 4 days ago
Regarding the second point, 2013 accident was caused by higher than allowed speed and drivers had been complaining about the line not having the security system that automatically enforces speed limits. In this year's accident, the line has a much stricter securty system.
The main issue with spanish rails, high speed and specially traditional rail is the lack of maintenance.
Comment by fpoling 4 days ago
For example, people typically pay for house/apartment insurance. But insurance companies never send a person to check for things like leaking pipes or whatever. Rather they simply wait until an accident happens and dispatch an emergency crew and cover a lot of damage that could be easily prevented. Then people tolerate non-trivial damage to homes/apartments like leaky roof not reporting it to insurance companies for weeks.
Then with cars people often do not follow the maintenance schedule and insurance companies do not ask for that. Typically people drive until damage happens due to a minor accident or maintenance are forced by state required technical inspection once in few years. The car companies even offer free maintenance checks as a part of guarantee but people skip even that.
Yet when someone spends efforts to complain, thinks do gets done. For example there a city service to remove graffiti on public areas. If one files a complain, they react and remove the graffiti. However sometimes one needs to send a complain twice.
Comment by AshamedCaptain 4 days ago
Never I had the pipes in my home inspected, even now that I live in areas where it freezes regularly.
Never has anyone (not even my insurance) forced me to follow any particular maintenance schedule (albeit I'm quite sure somewhere in the fine print it will read that if the accident is because of poor maintenance they'll just ignore the claim).
Here the city service to remove Graffiti is almost overnight, and works better than many other public services...
Comment by decimalenough 4 days ago
Comment by otikik 4 days ago
That might be because Japan did have a huge railway accident in 2005 due to excessive speed.
https://en.wikipedia.org/wiki/Amagasaki_derailment
> Of the roughly 700 passengers, 106 passengers and the driver were killed, and 562 others were injured
The Santiago de Compostela derailment (first link on the parent comment) happened in 2013 for the same reason.
All that said, I would not be surprised if the culprit for this particular case is lack of maintenance. However I would wait until the official investigation is over before drawing conclusions.
Comment by ricardobeat 4 days ago
I’m not sure these are comparable, high-speed rail needs much tighter tolerances as the risk is orders of magnitude higher. As the parent comment stated there have been zero major crashes on the japanese shinkansen lines.
Comment by pibaker 4 days ago
There is also no reason to treat speed limits on high speed and normal trains differently. There are plenty of speed related crashes on low speed lines. If anything the stakes are even higher on commuter trains because they tend to carry more people, many of which will be standing, and are more likely to crash into another structure as was the case in the Japanese incident mentioned.
Comment by shevy-java 4 days ago
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Comment by ak217 4 days ago
No, Japan more or less invented ATC in the 1960s for the purpose of running the Shinkansen safely.
Comment by something765478 4 days ago
Does the system automatically slow down the train, or does it notify the engineer? I would imagine that there are some scenarios where going over the speed limit is the correct choice.
Comment by m4rtink 4 days ago
https://en.wikipedia.org/wiki/The_Bullet_Train
https://en.wikipedia.org/wiki/Bullet_Train_Explosion
In the movies terrorists place a bomb on board and the train crew has to maintain a minimum speed or the bomb explodes (this is where that american movie with a bus got the idea). And they have to manipulate the ATC or else it will stop the train when they enter sections of the track with lower minimum speed, or else ATC stops the train and the bomb explodes.
Comment by lolc 4 days ago
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Comment by sva_ 4 days ago
0. https://old.reddit.com/r/drehscheibe/comments/1qe9ko2/ich_gl...
Comment by mschuster91 4 days ago
That entirely depends on which class of tracks we're talking about. And on top of that, remember that Europe is at war with Russia, railway sabotage has been attributed to Russia already in Poland [1] - and if you ask me, I don't believe for a single goddamn second that "cable thieves" were the cause behind the infamous 2022 attack on Germany's railways [2] either.
> And what systems are in place to actually detect this.
In Germany, dedicated railway cars called "RAILab" [3] that can measure track performance at up to 200 km/h perform the bulk of the work. In addition, each piece of infrastructure has something called an "Anlagenverantwortlicher", a person responsible for it - and that person has to walk each piece of infrastructure every two years at the very least, sections that have shown to be problematic get walked sometimes weekly.
[1] https://www.bbc.com/news/articles/c4gknv8nxlzo
[2] https://en.wikipedia.org/wiki/October_2022_German_railway_at...
Comment by crote 3 days ago
The German Federal Police has nothing to gain by lying about this incident. They explicitly investigated the possibility of foreign sabotage, found the perpetrators, and concluded that it was just regular theft. Sometimes a horse is just a horse, even when there are zebras running around.
Comment by mschuster91 3 days ago
And yet, there are multiple different theories floating around on who bombed North Stream. The police and DA assume that Ukrainians were behind this mess, possibly under orders of back-then UA army chief Zaluzhnyi according to leaks and rumors, but official communication on that has been ... lacking and that's putting it mildly. It doesn't help that there are credible suspicions of Russia being behind it either, the only theory I'd move to the "conspiracy bin" is that it was a CIA operation.
When it comes to anything involving this war, there really is no reason to trust anyone.
> They explicitly investigated the possibility of foreign sabotage, found the perpetrators, and concluded that it was just regular theft. Sometimes a horse is just a horse, even when there are zebras running around.
I agree... but still, the timing is so incredibly close that it's just as possible that for once the cable thieves were capable of good OPSEC practices.
Comment by iSnow 4 days ago
Comment by red75prime 4 days ago
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Comment by crote 3 days ago
Most railways regularly inspect their tracks to detect issues before they turn into a disaster. The big question here will be: why wasn't this caught earlier?
Comment by dv_dt 4 days ago
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Comment by crote 3 days ago
As the article notes: the initial break left marks on the wheels of several previous trains. The final gap is big enough that no train could possibly make it past it, so it is pretty clear that the gap got larger as the incident progressed.
Comment by blibble 4 days ago
very
> And what systems are in place to actually detect this.
track circuit detection would pick up most cases I would have thought
Comment by crote 3 days ago
Provided track circuit detection is even used, of course. I vaguely recall it not being compatible with either 25kV electrification or high-speed rail in general, and most modern tracks therefore using axle counters instead.
Comment by iggldiggl 1 day ago
Track circuits aren't incompatible with that per se, but axle counters are simply easier to install and much more maintenance-friendly – no longer having to worry about
- mixing track circuit currents and traction return currents together
- having to keep the rails sufficiently isolated from the ground and each other to prevent the track circuits from falsely showing occupied
- insulated block joints
- having to use each bit of track once every twenty-four hours to prevent rust from falsely showing a track as clear
- extreme leaf fall and/or sanding potentially causing false clears, too
- length restrictions on the maximum length of a single track circuit, although that's only really a problem on more sparse trafficked lines with long block sections
In return, axle counters have the drawback that they
- don't detect broken rails (although it needs to be said that track circuits very much aren't perfect broken rail detectors, either)
- can be falsely reset (with more or less protections, depending on local operating practices)
- don't detect maintenance vehicles freshly placed upon a track until they enter the next axle counter section
but since most to almost all new installations seem to use axle counters, the trade-offs are apparently worth it to infrastructure operators.
Comment by diogenes_atx 4 days ago
1. According to the CIAF, the break in the track was "practically undetectable." The fracture on the track was not noticed by the trains that passed over it, or by the technicians responsible for the maintenance of the infrastructure.
2. The damaged train, which belongs to the Italian company Iryo, is heavier than other trains running on the track; the additional weight of the Iryo train may have been a factor, or possibly even one of the causes, of the derailment.
3. The CIAF said that the notches registered in the wheels and the deformation in the rail are "compatible" with the fact that the track was broken before the Iryo train passed over it.
4. Spanish Transportation Minister Óscar Puente rejected criticism of the delay of the rescuers; according to the Minister, rescuers arrived within "18 minutes."
The full article is available here: https://www.jornada.com.mx/2026/01/24/mundo/020n3mun
Comment by iwwr 4 days ago
Comment by Sharlin 4 days ago
Fun fact: the reason modern concrete or composite sleepers (e.g. [1]) have a slightly concave profile is to better resist lateral forces (i.e. buckling) than traditional straight-profile wooden sleepers.
[1] https://www.romicgroup.com/permanent-way/concrete-railway-sl...
Comment by iwwr 3 days ago
Comment by JumpCrisscross 4 days ago
This sounds like something a camera mounted on a sample of trains watching a wheel could catch.
Comment by kumarvvr 4 days ago
Comment by mkl 3 days ago
https://de.wikipedia.org/wiki/RAILab
https://en.wikipedia.org/wiki/Doctor_Yellow
https://en.wikipedia.org/wiki/SNCF_TGV_Iris_320
Comment by zelphirkalt 3 days ago
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Comment by christkv 4 days ago
https://people.com/train-collides-with-crane-arm-in-4th-rail...
It's clear some of them are probably caused by neglect in maintenance, others are freak accidents.
It's pretty crazy the statistical probabilities involved for something like this.
Comment by hexbin010 4 days ago
An Asturias Circanías train collided with debris from a collapsed tunnel wall on Thursday afternoon in Olloniego. No injured though
Comment by tedggh 4 days ago
High-speed lines (AVE): Visual and geometry inspections are performed daily to weekly using inspection trains and onboard measurement systems. Ultrasonic rail flaw detection is typically done every 1 to 3 months, depending on traffic and tonnage.
Source: ADIF high-speed maintenance programs and EU interoperability maintenance requirements.
Comment by Helmut10001 3 days ago
Comment by montroser 4 days ago
It seems a shame that a few other trains passed beforehand with this anomaly in place and yet it went undetected.
Comment by sigwinch28 4 days ago
For example, in the U.K.:
Comment by amelius 4 days ago
Comment by 1718627440 4 days ago
Comment by mkl 3 days ago
Germany: https://de.wikipedia.org/wiki/RAILab
Japan: https://en.wikipedia.org/wiki/Doctor_Yellow
France: https://en.wikipedia.org/wiki/SNCF_TGV_Iris_320
China: https://en.wikipedia.org/wiki/China_railways_CIT_trains
Comment by N19PEDL2 2 days ago
Comment by mitthrowaway2 3 days ago
> Line inspection is carried out at full speed, up to 270 km/h or 168 mph on the Tōkaidō Shinkansen and 285 km/h or 177 mph on the Sanyō Shinkansen
Comment by Azrael3000 4 days ago
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Comment by dkbrk 3 days ago
Under "rail break monitors" it mentions both electrical continuity and time-domain reflectometry can be used, and are most frequently used on high-speed tracks.
In addition, there are vast array of other detectors using acoustic sensors, strain gauges, accelerometers, cameras in the visible and infrared spectrum or laser measurement, that potentially could have detected an anomaly (i.e. damage to the wheels of other trains before the incident).
[0]: https://en.wikipedia.org/w/index.php?title=Defect_detector
Comment by NamTaf 3 days ago
We squeezed some track condition monitoring hardware into some locos but it was single-driver operations locations and we cannibalised some of the room that would have otherwise been occupied by the second driver.
Comment by djoldman 4 days ago
It measures vertical forces in kips - (kilo-pounds-force, 1 KIP = 1,000 lbs)
They have these in the USA.
Comment by iggldiggl 1 day ago
Comment by direwolf20 4 days ago
Comment by buildbot 4 days ago
Though conceivably the break was very small and a train impacting the slightly lifted rail just caused a good chunk of it to explode.
Comment by WarOnPrivacy 4 days ago
The crown (top) of the rail seems to be missing after the gap. The crown-less section then continues ~3 meters before it disappears behind the investigator on the left. IDK what that might indicate.
ref pic: https://ichef.bbci.co.uk/news/1024/cpsprodpb/ecb4/live/53924...
Comment by zidel 4 days ago
edit: other angles of the same location here: https://youtu.be/DIQ4SrGSua0?t=1174
Comment by WarOnPrivacy 3 days ago
Ah, I see it now. The marks from contact with the ties should have clued me in earlier.
Comment by kgwgk 4 days ago
Comment by smcl 3 days ago
Comment by ThePowerOfFuet 4 days ago
The crack was in the weld, causing one side to sink and the wheel to hit the start of the next section of rail which was no longer welded to it, causing stress fractures to form in the rail which later caused that 40cm piece to break off.
Comment by crote 3 days ago
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Comment by hexbin010 4 days ago
And how does it accord with the many statements made early on about the track being renewed recently?
Comment by fcatalan 4 days ago
Still the media in question, "El Mundo", is a mouthpiece for the opposition parties, seeking to create indignation against the government and scoring the head of the Transport Minister in particular.
They also want to make a parallel with the situation of the former President of the Valencian Community, from their party, who had to finally resign one year after being unreachable for hours on a date while hundreds of valencians drowned as his administration waffled aimlessly.
Of course the government is ultimately responsible for the state of the infrastructure, so the Minister well might have to resign after all is said and done, but the innuendo in that piece is pure politicking, not serious journalism.
Comment by christkv 4 days ago
https://www.elmundo.es/economia/2026/01/25/697635e8fc6c83c42...
Comment by rokkamokka 4 days ago
Comment by webburgos 3 days ago
Comment by amelius 4 days ago
Comment by woodruffw 4 days ago
I think these kinds of accidents are largely mitigated by rail defect monitoring. I know rails in the US are equipped with defect detectors for passing trains; I'm surprised that a similar system doesn't exist for the rails themselves. Or more likely, one does exist and the outcome of this tragedy will be a lesson about operational failures.
Comment by direwolf20 4 days ago
Comment by Gare 4 days ago
Comment by kgwgk 4 days ago
Comment by lurking_swe 3 days ago
the more you build the more maintenance costs rise.
Comment by peddling-brink 4 days ago
Comment by wasmitnetzen 4 days ago
Comment by xcskier56 3 days ago
Comment by ThePowerOfFuet 4 days ago
Comment by bsder 4 days ago
That's simply really, really rare bad luck.
Practically anything you can think of is going to be a more effective use of safety resources than trying to contain a derailing high-speed train.
Comment by curiousObject 3 days ago
Also the issues other comments described, including that any fault in the barrier means a new safety hazard
Comment by bombcar 4 days ago
But that requires the trains mostly always being on schedule.
Comment by shevy-java 4 days ago
Spain needs to rethink the way it operates trains. I think Switzerland handles this better, overall, though they probably also don't have as many fast trains because there are so many mountains. But I refer more to the intrinsic quality control and assumption made. If I recall correctly in Spain, there was the other train also coming in. I am sure they could have built the tracks differently. Granted, the issue here is cost, and an attempt to keep the cost down, but if you then accept disasters like that, it seems really awkward to me to want to save money here. And now that we know the track was already damaged, that just adds more validity to questioning whether the quality control systems were overall proper.
Comment by hexbin010 4 days ago
Comment by izacus 4 days ago
Comment by hexbin010 3 days ago
I could make a cheap shot about fires in bars...but I won't.
Comment by izacus 3 days ago
Distance isn't even remotely relevant to complexity of running safe operations.
Data like fatalities per 1 million kilometers driven is significantly more relelvant - all metrics at which Swiss railways significantly exceed any European rail despite operating at significantly larger density of traffic.
Spanish railways have lately killed a horrifying amount of passengers - perhaps instead of insulting more competent operators, it's time to look at what keep going wrong there? Any responsible person would call for experts and advice here - e.g. we commonly see thet in air safety where foreign safety experts are invited to investigate and provide their own reports and recommendations.
What you seem to be doing here is something directly opposed to it and very very toxic - nationallistically trying to insults others and save face, which is very contraproductive for future safety.
Comment by hexbin010 2 days ago
Ad hominem so I'll discard most of your post. You lose when you try to insult my character.
> Spanish railways have lately killed a horrifying amount of passengers
Swiss bars have lately burned a horrifying amount of customers. Get your own house in order :)