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Transportation Google Technology

Google Self-Driving Car Rear-Ended In First Injury Accident 549

An anonymous reader writes: Google's autonomous car project, as of June, hadn't been in any accidents that involved an injury. That changed on July 1st, though it wasn't the technology's fault. A Lexus SUV that was self-driving while carrying three Google employees was rear-ended while stopped at a traffic light in Mountain View, California. All three employees had minor cases of whiplash, and were quickly checked out and released from the hospital. The other driver had minor neck and back pain as well. Chris Umson, head of the autonomous car project, said, "Other drivers have hit us 14 times since the start of our project in 2009 (including 11 rear-enders), and not once has the self-driving car been the cause of the collision. Instead, the clear theme is human error and inattention. We'll take all this as a signal that we're starting to compare favorably with human drivers." He also posted a short video of how the self-driving car was tracking other vehicles at the time of the crash — including the one that hit it.
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Google Self-Driving Car Rear-Ended In First Injury Accident

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  • Crash Mitigation (Score:5, Interesting)

    by jazzy82slave ( 948648 ) on Friday July 17, 2015 @08:49AM (#50127681) Homepage

    If Google's self-driving car was able to track the car that rear-ended it, I wonder if there are ways to mitigate this kind of "predictable" crash. Maybe letting off the brakes a tad to lessen the impact, or (out of left field idea) deploy air bags on the bumpers?

    Seems like if the real issue is "everyone else" in driving you would think Google could come up with ways to reduce the impact level of inevitable crashes.

    • Why should the car leave the relatively safe road and go off-road to prevent a collision that isn't its own fault, anyways? And what happens when it plows into a bystander to avoid a crash with a drunk driver? Note in the video the stuff off to the right of the car (where it could feasibly dodge): there were objects there that it may have collided with if it tried to do this.

      Having the robotic car not only drive well, but correct for the mistakes of other drivers on the road adds immense complexity and may

      • Certainly swerving wildly out of the way to avoid a crash has the potential to cause more harm then good. However, small corrections to avoid passenger whiplash should be something Google looks into.

      • by tibit ( 1762298 ) on Friday July 17, 2015 @02:31PM (#50131205)

        You really must be out of touch with what Google is doing. They are already correcting for the mistakes of other drivers, even these of bicyclists and pedestrians. They literally had multiple cases of bicyclists who made life-threatening mistakes and horribly took over others' right of way and have been detected and protected by the self driving system. They also protected stupid drivers who had poor lane control, didn't check their blind spot, etc. They drove through hundreds of not-at-faults close calls where a human driver would allow an accident to happen even while not being at fault, but the self driving system has modified its behavior to avoid the otherwise inevitable collision.

        Let me get this clear to everyone reading this: a current Google self driving car tracks all cars and pedestrians visible to it in a ~300 foot radius, and also maintains the models of temporarily obscured vehicles and pedestrians. It won't actively plow into a bystander, even if that bystander is a drunk that has stumbled onto a road, unless it'd be physically impossible to stop in time. In fact, the current behavior of the system seems to be sacrificial: it will sacrifice to a rear-end to save a jaywalking pedestrian.

        People who think that such feats are "decades" away or out of reach of current technology have no idea what they are talking about.

    • by MrLogic17 ( 233498 ) on Friday July 17, 2015 @09:46AM (#50128313) Journal

      Sure, there could be some optimizations for reducing damage in an imminent crash scenario. That's just fine tuning. Google's real goal is to get a machine driving a little bit better than the average human. It's looking like, at least in known, well mapped cities, they have achieved that.

      As for letting off the brakes when getting rear-ended, that may not be a good idea - the guy in front of you may not appreciate turning a 2 car wreck into a 3 car wreck. Especially if said impact pushed them into crossing traffic.

      There's some room for "can I dash out of the way" thinking, but in general that's probably a bad idea too. Being predictable to other cars is better than flitting around erratically, possibly causing other accidents.

      • Re:Crash Mitigation (Score:4, Interesting)

        by Solandri ( 704621 ) on Friday July 17, 2015 @02:22PM (#50131127)

        As for letting off the brakes when getting rear-ended, that may not be a good idea - the guy in front of you may not appreciate turning a 2 car wreck into a 3 car wreck. Especially if said impact pushed them into crossing traffic.

        I've actually been in this exact scenario. I was on the freeway when traffic in front suddenly stopped due to an accident. I stopped, but noticed in my rearview mirror that the two teenage girls in the car behind me were busy yammering away with each other. They got closer and closer, before finally noticing that I was stopped and slamming on the brakes.

        Here's the crucial part. Based on their distance, how fast they were going, and how quickly the brakes were slowing them down, I could estimate that they were going to stop about a meter past my rear bumper. As it turned out I had stopped with a good 3 meters between me and the car in front. So I just scooted forward a couple meters (this is the reason you're supposed to stop far enough back that you can see the rear tires of the car in front). The girls came to a screeching halt just behind me, heads flung forward against their seat belts, bounced up, and they started nervously laughing at each other. No collision, nobody got hurt, nothing got damaged.

        A computer-controlled car which knows exactly the distance to the car in front, distance to the car in the rear is, how fast it's approaching, and how quickly it's decelerating. It can easily make this kind of calculation and decide if its better to let off the brakes and scoot forward, or press down hard on the brake to absorb the rear collision but avoid hitting the car in front. I lucked out because I happened to be watching the entire situation develop in the rearview mirror, and could accurately estimate their speed and rate of deceleration. But a computer could calculate this at any time. And if you watch the video, the Google car had enough situational awareness that it could've easily detected cross traffic - it wasn't just tracking the cars immediately next to it.

    • Maybe letting off the brakes a tad to lessen the impact, or (out of left field idea) deploy air bags on the bumpers?

      Let's see. We're stopped at a traffic light, presumably with cross-traffic doing its thing. So we want to let off the brakes so we get pushed farther into the cross-traffic? Hmm, two car fender-bender turns into four+ car pileup....

      Yeah, that sounds like a good plan.

    • It's preferable for the car that is struck to not release its brakes. Basic physics. The more the struck car moves, the more injuries from the passengers in it. Also, the struck car moves and hits another car, etc.

      The struck car's momentum is what mitigates the impact for its occupants. Ideal would be deploying a system to keep the struck car from moving at all. Mercedes has a braking system they've been testing that would probably do the job. It's basically an airbag on the bottom of the car, with a very h

    • by AmiMoJo ( 196126 )

      The car could flash up a big STOP sign in the rear window to try to alert the driver of the car about to crash.

  • It's good that Google's autonomous cars haven't caused any accidents, however the bigger question is if there was a human driver in those situations, would any of them have been avoidable? I try to keep an eye on vehicles coming to a stop behind me when I'm stopped, which is something the Google cars may not be programmed to do (or even have rear-facing sensors to detect that at all). I'm sure these vehicles are safer than a good many drivers on the road, but they can only react and respond in ways they w

    • Re:Avoidable? (Score:5, Informative)

      by Phil Ronan ( 3491801 ) on Friday July 17, 2015 @08:57AM (#50127759)
      Well clearly it does have rearward sensing abilities as you can see from the video. The car was boxed in, so it really had nowhere to go.
    • Did you read the article and watch the accompanying video? The car was tracking the cars in front - the cars behind - the cars across the median going the other direction, etc...
    • by tlhIngan ( 30335 )

      It's good that Google's autonomous cars haven't caused any accidents, however the bigger question is if there was a human driver in those situations, would any of them have been avoidable? I try to keep an eye on vehicles coming to a stop behind me when I'm stopped, which is something the Google cars may not be programmed to do (or even have rear-facing sensors to detect that at all). I'm sure these vehicles are safer than a good many drivers on the road, but they can only react and respond in ways they wer

  • by QuietLagoon ( 813062 ) on Friday July 17, 2015 @08:52AM (#50127703)

    ...We'll take all this as a signal that we're starting to compare favorably with human drivers....

    When the self-driving cars can navigate the snow and obstacles of a Northeast winter, then I'll be impressed. Until then, the self-driving cars are little more than an expensive toy.

    • Re:Northeast winters (Score:4, Interesting)

      by buk110 ( 904868 ) on Friday July 17, 2015 @08:56AM (#50127753)
      I'd be curious to see how it responds to really weird northeast conditions like a snow squall or black-ice. Or my personal favorite, when it's really snowing and you need to make sure you're stopped in a good spot that you can get traction once you can start moving again
    • by Anonymous Coward on Friday July 17, 2015 @09:09AM (#50127891)

      When the self-driving cars can navigate the snow and obstacles of a Northeast winter, then I'll be impressed.

      To be fair, you're asking the self-driving car to do something that most humans can't do. :p

  • They have somebody hit them every 135k miles. I wonder how that compares to the world at large? And I wonder what's going to be the protocol when it happens with nobody in the car or the passenger doesn't own it? A car lacking a driver can't exactly exchange insurance info or do the normal things one does when involved in a collision.
  • Comment removed based on user account deletion
  • by BenFenner ( 981342 ) on Friday July 17, 2015 @09:23AM (#50128035)
    Where was this? I want to move there.
    The driver two cars ahead of the autonomus car was stopped at a green light (according tot he video), properly avoiding entering the intersection until they could drive through it (there is a car stopped immediately at the end of the intersection according to the video).
    That is some good driving on everyone's part, except the driver of the Lexus who rear-ended the autonomous car of course.
    • by Megane ( 129182 ) on Friday July 17, 2015 @10:30AM (#50128849)
      I had to RTFA to find this out. It's hard to see because it's so far ahead of the Google car, but you can see little purple shapes on the other side of the intersection. Basically the next block was full due to heavy traffic (probably rush hour), and that driver stopped so as to not "block the box". Driver behind was not paying attention and failed to stop even with a large following distance.
  • by rsborg ( 111459 ) on Friday July 17, 2015 @10:50AM (#50129111) Homepage

    They do very unpredictable driving school-level things like slow/stop where deep shadows fall on the road. Like very suddenly. And then they stay there for a few seconds.

    I'm not surprised there's finally a rear-ending. I'm actually surprised it took so long.

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