Slashdot Mirror


Tesla's Inherent Safety Saves Five Joyriding Teenagers In Germany (arstechnica.com)

According to German newspaper Merkur, one 18-year old and four of her friends lost control of her father's Model S electric vehicle. The car reportedly flew more than 80 feet into a field before it came to a stop. Even though the driver and two of the passengers were airlifted to hospitals, none of their injuries were life-threatening, thanks largely in part to Tesla's skateboard chassis. Ars Technica writes, "The skateboard chassis used by the Model S and Model X is extremely safe, with crumple zones that are unconcerned with engines that can transfer kinetic energy into the passengers during a frontal collision." The images of the crash are not pretty, but one could imagine how much worse they would be if a front-engined internal combustion vehicle were involved instead of the Tesla Model S.

47 of 240 comments (clear)

  1. Sales type 4: talk to the customer's fears by Anonymous Coward · · Score: 4, Insightful

    The car is as safe as any other modern car.

    1. Re:Sales type 4: talk to the customer's fears by davester666 · · Score: 5, Funny

      No, only Tesla's come equipped with this life-saving technology. Everybody else installs a large spike in front of each seating position, covered by a faulty airbag.

      --
      Sleep your way to a whiter smile...date a dentist!
    2. Re:Sales type 4: talk to the customer's fears by Anonymous Coward · · Score: 2, Insightful

      ... as well as people who encounter bad drivers.

    3. Re:Sales type 4: talk to the customer's fears by davester666 · · Score: 3, Funny

      maybe the next tesla will also include the spike?

      --
      Sleep your way to a whiter smile...date a dentist!
    4. Re:Sales type 4: talk to the customer's fears by jellomizer · · Score: 5, Interesting

      Being that there are so few Tesla cars out there, and they are really expensive, I doubt you will see too many real world car wrecks of Teslas. People were always a bit curious about the safety of electric cars, electrical fires, getting electrocuted... Now granted many of these concerns are less of an issue compared to riding a car powered by explosions. However because it is new, people worry about the safeguards in place. And how would such a car fare in real world accidents. Especially lately companies have been cheating the system to change their results from the test to real world.

      The point of the story actually was the tesla design allowed for much more crumple zone than standard cars to improve passenger safety.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    5. Re:Sales type 4: talk to the customer's fears by Black.Shuck · · Score: 2

      Everybody else installs a large spike in front of each seating position, covered by a faulty airbag.

      Remove the airbag so people can see the spike pointed at them and see how that affects accident statistics.

    6. Re:Sales type 4: talk to the customer's fears by Salgak1 · · Score: 2

      No it doesn't. My Mother-in-Law is a one off, and at last check, came as standard equipment in a POS 1998 Eldorado. . .

    7. Re:Sales type 4: talk to the customer's fears by HornWumpus · · Score: 2

      Front wheel drive cars have been engineered to let the engine flop backwards and down in a front end accident (going under the passenger compartment) for more than a decade.

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    8. Re:Sales type 4: talk to the customer's fears by KGIII · · Score: 2

      See the Subaru. The "boxer" engine is designed to do just that. Other manufacturers do the same thing. I'm too lazy to find you a video but you can check out this one (of many) pages found by simply asking Google:
      http://www.subaruofkeene.com/s...

      --
      "So long and thanks for all the fish."
  2. So what? by fozzy1015 · · Score: 4, Insightful

    Plenty of cars in that price range have "inherent safety" and would protect its occupants in a similar accident, even though they run on an internal combustion engine.

    1. Re:So what? by Anubis+IV · · Score: 5, Interesting

      I recall an anecdote from a few years ago. Apparently, the Model S uses a variety of weld for its frame/roll cage that was previously only used in spacecraft. When the NHTSA went to do its rollover safety tests by crushing in the roof of the Model S to simulate how it would hold up in a roll, their crushing machine broke before the Tesla did. The NHTSA had to get a more powerful machine before they could successfully measure how much the Model S could take. Results like those were why the Model S got the highest safety scores of all time (a perfect score across the board).

      The German news site has a slideshow showing the car from a variety of angles. We've likely all seen the woeful pictures of luxury cars after rolls. Quite often the roofs are buckled, the passenger compartment is barely visible, and while you can see how someone's body might contort in the space so they could survive, it looks like it would still have to be a miracle. In contrast, this car was so intact that they were able to just open the door. The roof looks like it only has a few scratches. Meanwhile, the entire front is just gone, and the back is smashed to bits.

      Say what you will, but I have NEVER seen pictures after a rollover crash like this with the passenger compartment so remarkably intact.

    2. Re:So what? by Harlequin80 · · Score: 3, Insightful

      Never in a month of sundays did that car roll. If it rolled then Tesla needs to start selling their paint products as a magical no mud sticks and can't be scratched. It has impacted something at the front and then it had bounced a few times through the dirt.

      The tesla is a great car but it isn't magical.

      http://www.autoevolution.com/n...

    3. Re:So what? by AK+Marc · · Score: 4, Interesting

      Never in a month of sundays did that car roll.

      It rolled, but never touched the ground. It looks like it went off the road, dug in, and flipped endo (end over end), and bounced off the trunk, and landed on the bottom (or landed on the tail or nose and settled upright). It never touched ground on the sides or top, but did "roll". You are thinking the wrong axis.

    4. Re:So what? by michelcolman · · Score: 5, Interesting

      The Tesla has a much better crumple zone in front because it doesn't have a huge heavy engine block in there. Just look at the pictures, the front end is essentially gone yet the passenger compartment is intact. I would say that's a pretty important advantage, and it may have been just the difference required to save their lives. If it had been a Mercedes, where would the engine have gone? Even if it didn't go into the cabin, it sure would have left much less room for crumpling to absorb the impact.

      The passenger compartment is also extremely strong, they actually broke the testing equipment when they tried to crush the roof, for example. They overengineered the hell out of that car. Tesla is pretty new in the car business: when they designed the Model S they hadn't figured out yet that you have to compromise on safety if you want to compete in the market. They just made it as strong as they could. Fortunately the car is compelling enough that rich people don't mind spending the extra money. The Model 3 will probably be pretty safe, but I doubt it's going to break any testing equipment. For $35000 something will have to give.

      Also, the car didn't catch fire. I know real cars don't automatically burst into flames while airborne like they do in the movies, but in this kind of crash some kind of fire would have been pretty likely. Here's one from not long ago, a crash between a Tesla and an ICE vehicle, the ICE caught fire while the Tesla didn't. Yes, I know, some Teslas have caught fire as well in other accidents but it was always after at least 10 minutes or so, giving people plenty of time to get out first. With an ICE, as soon as a fuel like breaks, you have to run away fast.

    5. Re:So what? by michelcolman · · Score: 3, Interesting

      That's not the impression I get after googling something like "Mercedes crash images" (just to pick a random luxury car brand). In head on collisions the mangled engine always seems to remain in front of the cabin. I can't find a single picture with an engine underneath the cabin.

      I do remember Mercedes being very proud of that feature in their old A-class models. Those were indeed engineered that way. But for most other cars, the engine just stays in front.

    6. Re:So what? by Nemyst · · Score: 2

      Just lacking an engine block is inherently giving Tesla's cars a safety boost.

    7. Re:So what? by Ramze · · Score: 2

      *citation needed

      I'm guessing you're recalling this semi-famous crash. Reports varied, but it was likely going 120 mph, and it only rolled once -- more like flipped over, skid upside down for 100 yards, then flipped back when it was stopped and the roof was torn off. It was a Mercedes SL, and was a hard-top convertible. The hard top was tough, but not 3 roll accident tough. The weight and momentum of the car would have crushed that top if it had rolled 3 times.

      https://www.youtube.com/watch?...

    8. Re:So what? by ixs · · Score: 4, Interesting

      You can quite clearly see what happened by looking at the pictures presented by the Bavarian newspaper.

      http://www.merkur.de/bilder/2016/05/04/6373067/1613361945-unfall-icking-sportwagen-gaulke-PXHG.jpg - You see the curve there in the background? The one behind the black and the white BMWs?
      The driver went around that corner in her father's car, lost control and slid off the road into the grass. Probably either distracted, bad driver or just too faster for physics...
      Normally not a problem, you probably fucked up the under-carriage a bit and the front bumpers, but nothing a few days in the shop couldn't fix. But the girl got unlucky. Right after the corner is a small stub road leading into the field for the farm equipment. The black and white BMWs will help with lining up the viewing angles of the pictures.

      The car hit the stub road and the effect must have been similar to driving up a ramp for an Evel Knievel styled jump: http://www.merkur.de/bilder/20...

      The car rolled length-wise and must have hit the ground twice before coming to rest on the trashed wheels again. You can see the impact points in the field nicely on http://www.merkur.de/bilder/20... and http://www.merkur.de/bilder/20....

      That allows you to reconstruct the flight path: Lift-off at the stub road, front hits the ground first, momentum carries the car forward and leads to the first roll as the front is still embedded in the field. Car is hitting with the trunk next, still rolling with ample forward momentum which means the car will not be burried in the field but land on the wheels next. And that's where the car came to rest.

      You can look at the bumper and other plastic parts strewn all over the place, they match up nicely with that order.

      If you now look at the car at rest http://www.merkur.de/bilder/20... and http://www.merkur.de/bilder/20... you'll see how the glass is not completely shattered? This means little impact force onto the passenger cell and most of the impact just hit the front. Not even a direct frontal impact but mostly torsion forces hitting the bottom of the car front from the impact into the field.

      Based on all that evidence I'd say the 5 kids in the car were supremely lucky that they hit an empty field in a decent car. The airbags came in very handy, no doubt.

      But I think it is a bit premature to claim this shows anything like inherent safety of Tesla or even just that electric cars are safer than over conventional vehicles... That's purely the marketing department talking...

    9. Re:So what? by KGIII · · Score: 2

      Check some pics of Volvos after an accident. They are setup so that things like the entire nose can be knocked completely off - which means (for many models) they've designed the drive train to accommodate that. Things like that is why they're so expensive to insure. Not because you're likely to get hurt but because an accident will likely result in a totaled vehicle. It is designed to do so at the expense of protecting the passengers.

      --
      "So long and thanks for all the fish."
    10. Re:So what? by Anubis+IV · · Score: 2

      Responding to myself to provide citations and additional details, since there's some (perfectly understandable) incredulity in response to my comment.

      Regarding the weld, it's a variety of friction welding that SpaceX developed:
      http://electrek.co/2015/05/24/...
      http://gas2.org/2015/05/29/spa...

      Regarding the crush test breaking the machine:
      http://www.wired.com/2013/08/t...
      http://www.roadandtrack.com/ne...
      http://www.usatoday.com/story/...

      It's also worth noting that Tesla claimed they had achieved a NHTSA safety rating score of 5.4, which was utter and complete nonsense since the scoring is capped at 5 stars. Tesla apparently arrived at that number by totaling up each of the subcategories and ignoring the fact that the total score is capped by design. The NHTSA rightly slapped Tesla for saying they had achieved a score beyond the max, and by no means should my previous comment be taken as an endorsement of Tesla or everything they've claimed regarding their safety record over the years. I was simply sharing a neat tidbit that seemed relevant. Nothing more.

  3. Finally, proof! by TodPunk · · Score: 2

    Oh how long we've waited for this sign that physics worked exactly how we formulated it would. Think of the possibilities this entails, being able to plan out systems ahead of time using math and sound principles of modeled dynamics. We could call it a new field. I know, since it involved not having an engine in the front, we could call it "engineering!"

    We'll build a better world, I tell you!

    --
    This forum Sig is licensed under the LGPL.
  4. More slashvertisements by qbast · · Score: 5, Funny

    Next up: Tesla inherent awesomeness saves puppies.

  5. Advertising Feature by Harold+Halloway · · Score: 3, Insightful

    This advertainment informercial has been brought to you by Tesla; saving kittens the world over.

  6. Re:Invincible Tesla by Harlequin80 · · Score: 2

    This guy did a pretty good job....

    http://insideevs.com/additiona...

    In the end physics wins.

  7. Re:What? by Black+Parrot · · Score: 2

    80 feet... into a flat field, beside a road that's also flat and on the same level.

    Proof that the Tesla is a prototype for the long-promised flying car!

    --
    Sheesh, evil *and* a jerk. -- Jade
  8. Re:Why does anyone read Slashdot anymore? by Maritz · · Score: 5, Insightful

    If you fuck off, it'll be marginally more worth reading.

    --
    I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
  9. It's hard to see how the conclusion is supported by DrXym · · Score: 4, Insightful
    All vehicles in Europe receive an NCAP rating as part of their certification. This rating is based on the safety features and survivability for adult and child occupants as well as pedestrians from collisions. The Tesla has a very respectable score as can be seen here. It's certainly a very safe car but it is not outstanding compared to petrol vehicles. E.g. most of the 2014 best in class petrol vehicles had similar or better scores.

    So saying it is "inherently safe" or that a petrol vehicle would fare worse is pretty absurd. Inherently safe cars don't plant themselves 25m into fields in the first place regardless of their form of propulsion. And that's without even knowing what caused the accident in the first place.

  10. Re:Why do you think it is slashvertissment ? by Gussington · · Score: 4, Interesting

    It is news for nerd, at least me as a nerd, interested into security things like crumple zone , doing finite element analyzis etc... And if Tesla is using a different method with better effect then yeah that's highly interesting.

    I think the problem is the way the information is delivered. TFA sounds more like a marketing guff than an informed analysis.
    This being a news for nerds site, should have it's summaries tailored to this audience, not junk click bait from TMZ.

  11. It depends by Solandri · · Score: 4, Interesting
    • The crumple zone doesn't seem to have collapsed. It seems to have sheared off. In a collapsed crumple zone, you expect to see pillars and beams which have accordioned, thus absorbing the maximum amount of energy possible for the weight of the structure. A large chunk of my graduate structural engineering class was calculating these modes of failures for different shapes, so you could design the beam, sheet, whatever to deliberately buckle in this energy-absorbing way. The beams I can make out in the pics are bent and dislocated, suggesting the main impact wasn't head-on. So the crumple zone likely had little to do with their survival (other than it did shatter and fragment like it's designed to - so the vehicle can shed kinetic energy by losing pieces).
    • It looks like they crashed into a soft tilled dirt field. Probably the best possible place to crash. The soft material yields, helping to absorb energy. And it conforms to distribute forces over a large contact area, helping to more evenly spread forces over the car's structure. A crash into a concrete barrier is a completely different story. Like how it's difficult to crack an egg in your palm, but really easy with a hard edge.
    • There's no mention of the speed. Without knowing the speed, it's really impossible to say how well the car performed.
      • If they were traveling in excess of 150 kph, then this is damned impressive - the passenger compartment is nearly undistorted despite a roll, and it looks like they were able to just open the door to get people out.
      • If they were traveling around 100 kph, then it performed about as expected, especially given the soft dirt field.
      • If they were traveling around 50 kph, then this is terrible. There's no way the front should have suffered that much damage at such a low velocity.

    Given that most of the glass is still intact, I'm leaning towards this being either a low velocity impact, or a med/high velocity crash spread over a long distance and time (which also means low impact forces). Which means the fact that the front end shattered like that is really troubling. Perhaps the additional mass of the battery pack (the Tesla weighs as much as an SUV because of the battery pack) contributed to demolishing the front end despite the low impact forces? In an ICE vehicle, the bulk of the mass (engine) is in the front and it absorbs impact forces directly instead of through the structural beams. In a Tesla, the bulk of the mass is in the battery pack underneath the passenger compartment. Since the passenger compartment is designed to remain intact, the kinetic energy of the battery pack has to be fully absorbed by the structural beans in the front or rear.

    I would assume Tesla strengthened the beams by a corresponding amount to pass the crash safety tests. But those tests only cover direct front impacts, not a car leaving the ground and impacting the ground at (say) a slight nose-down pitch. The cantilever forces in such an impact due to the additional torque caused by the heavy battery pack behind it could account for the front shattering and shearing off like that.

    1. Re: It depends by Type44Q · · Score: 4

      I should stand corrected; I don't know where I developed the notion that the Model S was carbonfiber but according to Tesla, it is not (however, it is largely aluminum which also deforms rather differently than steel).

  12. Re:Tesla pollute more than regular gasoline cars by sonamchauhan · · Score: 2

    He referring to this Slashdot story, also posted today:

    cientists: Electric Vehicles Produce As Many Toxins As Dirty Diesels
    https://hardware.slashdot.org/...

  13. Survived the crash, but ... by Mostly+a+lurker · · Score: 2

    ... I wonder if the driver survived the aftermath when her father saw what she did to his car. I doubt if the insurers are going to cover the loss.

  14. Re: Tesla pollute more than regular gasoline cars by Anonymous Coward · · Score: 5, Funny

    "The problem with internet quotes is that you cant always depend on their accuracy" -Abraham Lincoln, 1864

  15. "flew more than 80 feet" by codeButcher · · Score: 2, Funny

    flew more than 80 feet

    The linked German article (as well as a follow-up) does not mention anything about the car flying... it says the car overturned until it landed back on its wheels (which explains all the bodywork damage in the photo...).

    Also, 80 feet???? Germany have not used such a unit in a couple of years ^H^H^H^H^H centuries. Might still be in use in the USA, Burma and Liberia. And perhaps the UK and Canada.

    --
    Free, as in your money being freed from the confines of your account.
  16. Re:Invincible Tesla by turp182 · · Score: 4, Interesting

    Would a concrete wall (at around 100mph) followed by a tree count? With the fronts wheels completely sheared off? Driver walked away. There was a fire (after the driver exited), but the body blocked it from the passenger compartment.

    Quote below from the link (photos at link):
    http://insideevs.com/tesla-rev...

    We believe these changes will also help prevent a fire resulting from an extremely high speed impact that tears the wheels off the car, like the other Model S impact fire, which occurred last year in Mexico. This happened after the vehicle impacted a roundabout at 110 mph, shearing off 15 feet of concrete curbwall and tearing off the left front wheel, then smashing through an eight foot tall buttressed concrete wall on the other side of the road and tearing off the right front wheel, before crashing into a tree. The driver stepped out and walked away with no permanent injuries and a fire, again limited to the front section of the vehicle, started several minutes later. The underbody shields will help prevent a fire even in such a scenario.

    I realize it's a fan site link for EVs, but it has the coverage as I remember it.

    And I'm not a fan boy, I respect Elon Musk and his RESULTS. He's pretty good in the results category, and in the dream categories.

    --
    BlameBillCosby.com
  17. Re:Tesla pollute more than regular gasoline cars by michelcolman · · Score: 5, Interesting

    The actual article is behind a pay wall, but the Daily Mail summary unambiguously says:

    - That was finding of a study looking at particles from tyre and brake wear
    - Made heavier by batteries and parts meaning tyres and brakes wear faster

    The Daily Mail article itself continues with multiple references to brake wear. Not once does it mention regenerative braking.

    Now I do admit that I should know better than to assume that a Daily Mail article about a paper would be in any way related to the actual contents of the paper, and it's entirely possible that the actual paper, behind the paywall, says exactly the opposite. Maybe it will even say that EVs are cleaner after all.

  18. Re: Why does anyone read Slashdot anymore? by Type44Q · · Score: 3, Insightful

    Fine with me; he's the closest thing to an idol we've got and for good reason.

  19. Not it's not. by Qbertino · · Score: 2

    The car is as safe as any other modern car.

    Nope. It actually *is* safer.

    Here's why (from the top of my head):

    1) The center of weight is notably lower (huge battery pack along the floor, no huge motor up front), making the Tesla Model S safer in handling than other limosines.

    2) It has no motor and thus a *way* better crumpling zone in the forward trunk.

    3) Right now tt has the best driving-assistance on the streets and in end-users hands.

    My 0.02 Euros.

    --
    We suffer more in our imagination than in reality. - Seneca
    1. Re:Not it's not. by sjames · · Score: 2

      Ultimately, until they become self-driving, they will have to follow the driver's commands for better or worse. In this case, much worse.

  20. Complete. Fucking. Horseshit. by drinkypoo · · Score: 2

    The images of the crash are not pretty, but one could imagine how much worse they would be if a front-engined internal combustion vehicle were involved instead of the Tesla Model S.

    You can imagine all day, but as long as you're only using your imagination and not crashing testing or computer modeling, you're just being a stupid ass.

    The fact is that the Tesla is not at all unique in its ability to protect the occupants from harm in a ridiculously major collision. Look at Audi A8 crash photos sometime. There have been a fairly high number of incidents in which the car was very well mangled (even to the point of "what part is that?") and yet all the occupants walked away. You can expect this to be true out of basically any of the truly modern premium vehicles, that is, made out of Aluminum or better. That's because they don't have to make poor tradeoffs for crash safety, they just cost more money. But mind you, lots of the really scary-looking crashes I'm talking about were in the original A8, which was finalized way back in 1993 and appeared as a 2004 model.

    The idea that the essential design of the vehicle protected these passengers better than would another car in the same price range is specious at best.

    --
    "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  21. Re: Why does anyone read Slashdot anymore? by thegarbz · · Score: 2

    Really? No idol of mine

    Then go find a site that worships your god.

  22. Re:Not seeing how this is any different. by 6Yankee · · Score: 2

    My idiot friend (at the time - now he's just an idiot) lost it on a country bend at what the police later estimated to be around 80mph, and flipped us clean over a dry stone wall and easily 60 metres into a field. The car rolled at least once, and the front passenger corner of the roof took the brunt of it. All four of us walked away, although one of the rear-seat passengers still has a nasty scar from sticking his head through the rear window.

    That was 20 years ago, and the Ford Fiesta was easily 15 years old at the time. The reason the rear-seat passenger stuck his head out the rear window? No seat-belts fitted in the back. Idiot friend convinced another idiot to winch the wreck out of the field, then drove it 20 miles to the scrap yard. Roadworthy it most certainly was not, but it was drivable...

    So: Amazing OMGWTFBBQ Tesla safety, or the same sheer blind luck we had?

  23. Re:Tesla pollute more than regular gasoline cars by haruchai · · Score: 3, Insightful

    "However, due to the increased weight of electric vehiclese, they are subject to more tyre wear and they cause more road wear"
    I can't recall anyone making much fuss over the many, many, many F-150s, other trucks & SUVs that have been causing excessive tyre & road wear since the 80s, or acknowledging that 18-wheelers & buses should bear the burden of paying for most of the road repair since they cause, by far, most of the damage.

    --
    Pain is merely failure leaving the body
  24. Re:Not seeing how this is any different. by Punko · · Score: 2

    I was in a '82 Honda civil at highway speeds as the car in front of me changed lanes. The Ford LTD now in front of me hit the nearly stationary car in front of it. Its rear end rose with the impact. I was able to bring my car to a stop just short of the bumper when the Chevy Econovan plowed into me from behind at 100 km/h. The Ford's bumper sheared off my hood. My glasses ended up sitting on the Ford's bumper. Every window in the civic was smashed. I had linear bruises from my seatbelt.

    The engine was still running.

    Tough little car, caught between a immovable object and an irresistible force.

    --
    If only we could fall into a woman's arms without falling into her hands
  25. Re: Why does anyone read Slashdot anymore? by shaitand · · Score: 2

    What if you don't give a shit about the environment and just think they are sweet cars?

  26. Re: Why does anyone read Slashdot anymore? by shaitand · · Score: 2

    Also, worth mentioning that climate change is a much bigger issue than strip mining. Strip mining is no worse the natural geologic processes the Earth goes through reshaping itself every day.

  27. Re:Tesla pollute more than regular gasoline cars by dsmatthews9379 · · Score: 2

    The "Little Brown book of Contemporary Trolls - volume 5".