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Another tragic fatality with a semi in Florida. This time a Model 3

Discussion in 'Model 3' started by Az_Rael, Mar 1, 2019.

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  1. jerry33

    jerry33 (S85-3/2/13 traded in) X LR: F2611##-3/27/20

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    While true, that's probably not the reason. U.S. legislators have never made safety regulations for industry unless it directly affected them. (Repeated info, so skip if already known). In the days of the railroad barons, Westinghouse developed a safety brake for trains, which would reduce the number of accidents. Every railroad baron was against putting this on because it would harm profits and the railroad would go bankrupt (according to them). Eventually a Congressman's family was killed in a railroad accident and legislation was pushed through. It turned out that this made the railroad barons more money than before because they could schedule more trains on a given track. Freight companies not putting on side guards is the same flawed logic. This logic is also why the U.S. is not leading the way in renewable energy and is now calling gas "freedom molecules" instead of "death molecules".
     
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  2. Daniel in SD

    Daniel in SD Well-Known Member

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    As far as I can tell, from all the autopilot videos I've watched, the system has no concept of object permanence and only analyzes individual frames.
     
  3. derotam

    derotam Member

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    Soooo...what are you suggesting...exactly...? ;)

    Just kidding everyone!!! :)
     
  4. GolanB

    GolanB Supporting Member

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    That seems to be the case, and I'm wondering why they've avoided assigning object permanence. There must be a good reason for this, and Tesla probably decided it would be better not to. I don't believe this is the way our brains work, we seem to attach tags and identifiers to objects, but we're making use of our memory and prior recognition to do so. I guess that there could be a tradeoff (false positive) that Tesla doesn't want to entertain in the event it gets it wrong initially.

    Even if we fail to accurately attach a label to an object after detecting it positively in the past, we should at least get its border regions accurate.

    This may be the ultimate problem right now -- If the issue is with the white truck and the relative contrast values with the sky, it would be fascinating to see the same test against a darker truck, or one painted fire-truck red. Perhaps Tesla would do better with a full-spectrum camera and apply multiple filter passes to determine the difference between the truck's surface and the sky.

    If I had the time, I'd take some IR captures on an image stack and see what changes it has to contrasted edges.
     
  5. Joshan

    Joshan Member

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    my guess would be the cpu/memory contraints in HW2.5. They already said that system is maxxed out. Be much more curious how HW3 behaves when they get the proper code sent out.
     
  6. mongo

    mongo Well-Known Member

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    @verygreen, correct me here: This is the feed from the NN doing object detection and recognition. It is not the output from the higher level path determination code where object tracking and persistence would take place.
     
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  7. verygreen

    verygreen Curious member

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    yes.
    That said I don't think there's any object persistence code.
     
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  8. buyer123456

    buyer123456 Member

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    My bet is all automakers and research universities worldwide have been working on this same problem, and the fact that it is still a problem for that long implies it is a difficult problem to solve.
     
  9. GolanB

    GolanB Supporting Member

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    The issue seems to be related to feature extraction (computing edges, corners, blobs, ridges) and may be a problem at lower levels during image acquisition time where the camera has a hard time differentiating the sky from the white panels of the truck.

    Although not directly related, the human brain compensates for holes in its vision all of the time, and we don't even realize it unless we test it in particular ways. Here is an example:

    .

    Presumably, as things progress, the NN should eventually be able to be trained and compensate for holes (occlusions) in its sensor data, so perhaps there are several ways to address this phenomenon.
     
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  10. GolanB

    GolanB Supporting Member

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    Here is some recent activity by the Government Accountability Office (GAO), including a request for additional "study." This is amazing to me, given the fact that the research is out already, they should be able to fast-track this.

    See:

    FMCSA, NHTSA Should Study Side Underride Guards, GAO Says
    FMCSA, NHTSA Should Study Side Underride Guards, GAO Says

    There is more (quoting):

    The study also raised questions about the long-term viability and industry acceptance of side underride guards, which are still in the developmental stage and for which no federal standards currently exist.

    “Side underride guards are being developed, but stakeholders GAO interviewed identified challenges to their use, such as the stress on trailer frames due to the additional weight,” GAO said. “NHTSA has not determined the effectiveness and cost of these guards, but manufacturers told GAO they are unlikely to move forward with development without such research.”

    Regarding single-unit trucks, such as dump trucks, the National Transportation Safety Board has recommended that NHTSA develop standards for underride guards, but the agency has concluded that “these standards would not be cost-effective,” GAO said.
    To your point, I hope it doesn't take a death in the family (of a government official) to press this forward, but often families have been able to push for change in legislation after taking it on themselves to bring visibility to the issues at hand.
     
  11. buyer123456

    buyer123456 Member

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    Hence my premise to just let the drivers see these video feeds in real time, and provide audio/visual cues too.

    Just imagine this is a fighter cockpit, give the pilot a chance by alerting of incoming projectiles damn [email protected]#$!
     
  12. Kanting

    Kanting Member

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    This is also a typical problem of Blind Men and the Elephant. They need much more compute power to solve this or build point cloud with available/visible light.
     
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  13. Kilotango74

    Kilotango74 Active Member

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    Oh yeah I eat French dip sandwiches while driving. If I have to I just toss it out the sunroof.
     
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  14. Paul Wolff

    Paul Wolff Member

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    I don't use auto lane changing. The people that went 90MPH into a wall most likely were asked to wiggle the steering, and pulled hard enough to disengage AP and the car swerved into the wall. That is one reason why they added the encoders to the "are you there" request. It's not autonomous, it's just assist. I use it every week, driving from my home to LA (2.5hrs) and I have learned all the oddities, and am very alert. The loss of stress from gripping the wheel is the only thing that saves my brain.

    I'm actually more aware of my surroundings, since I can look around a bit more at other drivers and stay away from the ones that are using a cell phone or not paying attention.
     
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  15. Kenz

    Kenz Member

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    Confirmation of lane changes should be required until we reach FULL SELF DRIVING.
    Right now auto pilot is a driver assist feature that requires the driver to always be in control.
    Don't blur the line between assist and FSD. It causes confusion for average drivers.
     
  16. Knightshade

    Knightshade Well-Known Member

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    Auto lane change only works if it actively detects hands on wheel- so there's no blur there- it won't work if the driver isn't remaining in control.
     
  17. Joshan

    Joshan Member

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    Except people game the system and put stuff on the wheel to make it think you are in control. But thats not reallt Teslas fault or an issue for them to fix. You cant fix stupid.
     
  18. RobDickinson

    RobDickinson Member

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    This is changing soon with HW3.0 and the FSD rewrite.
     
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  19. M109Rider

    M109Rider Active Member

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    I know the conclusion and final report to come Feb 25th will be interesting. However, I know they have to investigate these occurrences, but knowing the driver is responsible to maintain control of their Tesla at this point with self driving, I don’t know how Tesla can be held responsible.
     
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