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High-speed train collision in Spain kills at least 39

bbc.com

191–200 of 293 posts

Re: High-speed train collision in Spain kills at least 39

#191

Taking the commuter train to and from Dublin, sometimes another train on the other direction passes and it's a bit unnerving. I cannot imagine such a collision between two high speed trains :(

I have the same feeling riding the TGV in France. When another train passes in the opposite direction, the pressure in the interior of the cabin even changes. Not sure if it lowers or raises, but I can definitely feel it in my ears.

Re: High-speed train collision in Spain kills at least 39

#192
post #141

What we know so far: 1. The last 3 cars from the Iryo train (Frecciarossa 1000) derailed for unknown reasons. It's a straight line, so this is extremely rare. 2. The Renfe train (Alvia) didn't have time to break and hit the derailed trains from Iryo, the two first cars derail as a consequence of the impact. 3. The Iryo train(Frecciarossa 1000), that caused the accident, was manufactured in 2022 and it passed a techni…

also the derailed carriages crashed rolled down a hill which complicated things further

Re: High-speed train collision in Spain kills at least 39

#193
post #171
post #141

What we know so far: 1. The last 3 cars from the Iryo train (Frecciarossa 1000) derailed for unknown reasons. It's a straight line, so this is extremely rare. 2. The Renfe train (Alvia) didn't have time to break and hit the derailed trains from Iryo, the two first cars derail as a consequence of the impact. 3. The Iryo train(Frecciarossa 1000), that caused the accident, was manufactured in 2022 and it passed a techni…

In point number 3, you state that one of the trains caused the accident, whereas the cause of the accident is not yet known and could be for example an issue in the rails themselves.

Yes, that was not accurate and you're correct, it's still not clear what caused the first train to derail to begin with.

The way I looked at it is that the first train derailing wasn't a big issue, I don't think it caused any injuries. What was really catastrophic was the impact with the second train.

Re: High-speed train collision in Spain kills at least 39

#195
post #162

As a reference, ~1500-2000 people die every year due to cars in Spain.

How many cars are on the road in spain compared to how many trains are on the rail network? I would like to see an apples to apples comparison of deaths per mile travelled on the road and rail networks.

I think the only real metric would be death for X km traveled, correct?

Re: High-speed train collision in Spain kills at least 39

#196
post #141

What we know so far: 1. The last 3 cars from the Iryo train (Frecciarossa 1000) derailed for unknown reasons. It's a straight line, so this is extremely rare. 2. The Renfe train (Alvia) didn't have time to break and hit the derailed trains from Iryo, the two first cars derail as a consequence of the impact. 3. The Iryo train(Frecciarossa 1000), that caused the accident, was manufactured in 2022 and it passed a techni…

> 3. The Iryo train(Frecciarossa 1000), that caused the accident, was manufactured in 2022 and it passed a technical inspection just 4 days ago.

The inspection is a risk factor. There is data from the aviation industry for example that engine incidents on an engine that is certified for some thousands of hours of operation between inspection happen disproportionally in the first 100 hours (and then again at the end of the inspection interval). The inspection itself is an intervention that causes incidents.

Re: High-speed train collision in Spain kills at least 39

#197

Earlier quoted context omitted.

>You left out that the machinists warned about the bad state of the railway tracks and asked for reducing the train speed Since two trains collided, wouldn't that have happened regardless of the state of the railway tracks?

The collision was due to one train derailing first, if that was due to the track (as mentioned in andy12_'s toplevel comment) then listening to warnings could perhaps have avoided the accident.

Could have, though both trains were going slower than what the mechanic union asked for. Either or wasn't a factor, or the conditions were even worse than all parties believed.

Re: High-speed train collision in Spain kills at least 39

#198
post #99

Earlier quoted context omitted.

>Indeed last year some machinists had to derail a train to stop it from crashing other[2]. They were pulling it uphill with another unit, and the coupler broke so it rolled backwards and flipped at the curve.

Im what context it is normal to derail a train to avoid a crash with another one?

Actually for shunting that is normal. Derailment during shunting operations is a frequent occurrence and there are derailment facilities where shunting can occur, which get activated every time a train passes. What is rare is having an actual train derail.

As I don't know whether you are referring to an actual train, or just use that as a term for moving railway cars, the answer to your question could be either yes or no.

Re: High-speed train collision in Spain kills at least 39

#199

Earlier quoted context omitted.

You left out that the machinists warned about the bad state of the railway tracks and asked for reducing the train speed[1]. There is underfunding in all the railway network. [1]: https://www.eldebate.com/economia/20250809/maquinistas-piden...

Doesn't need to be underfunding, may 2025 was last summer and this was the first winter, defects in laying the tracks didn't have a chance to show up until now. The biggest part then might be that they should have listened to the operators warnings and scheduled a proper re-inspection of the route once they started warning of issues.

> defects in laying the tracks didn't have a chance to show up until now.

Defects in laying the tracks have a chance to show up on an inspection, either the final one when building or one done at the regular intervals. If it doesn't shows up, your inspection is bad. If you can't inspect what you build, you can't build it.

Re: High-speed train collision in Spain kills at least 39

#200

Earlier quoted context omitted.

Sure, but in this case, those don't have exist and you need to make a tough choice, so which is it?

Not having fail-safes is the issue itself.

The usual fail-safe is actually a derailment mechanism.
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