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This is what may have happened in the recent Tesla Autopilot Crash

cpddan
Demos
YouTube
Cited on HN 12 times, 2018–2019, never outright recommended score 0
Years with an HN recommendation, 2007–2026

HN cites it as evidence of Autopilot's behavior around lane gores, mostly in critical comments about Tesla.

A one-minute clip by cpddan reproducing how a Tesla on Autopilot 2.5 may have steered into a gore point barrier, as in a fatal Highway 101 crash.

2 citations · 10 critical · Demos · news from the time

12 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@jijojv Apr 2018 Cites it
on HN thread Widow of Tesla crash gives interview
Apparently the "Barrier" [1] bug is only in AP2 per latest A/B tests done by cpddan (who did the very first crash reproduction scenario in Chicago [2]) [link] Tesla Model X with AP2.5, SW 2018.6.1 [link] MS 75, AP1, SW 2018.6.1 1. [link] "works for 6 months with zero issues. Then one Friday night you get an update. Everything works that weekend, and on your way to work on Monday. Then, 18 minutes into your commute home, it drives straight at a barrier at 60 MPH." 2. [this video]
First crash reproduction scenario in Chicago by cpddan
@jijojv Apr 2018 Cites it
on HN thread Tesla issues strongest statement yet blaming driver for deadly crash
This is gonna be interesting as apparently the "Barrier" [1] bug is only in newer AP2 models per latest A/B tests done by cpddan (who did the very first crash reproduction scenario in Chicago [2]) [link] Tesla Model X with AP2.5, SW 2018.6.1 [link] MS 75, AP1, SW 2018.6.1 1. [link] . "works for 6 months with zero issues. Then one Friday night you get an update. Everything works that weekend, and on your way to work on Monday. Then, 18 minutes into your commute home, it drives straight at a barrier at 60 MPH." 2. [this video]
First crash reproduction scenario in Chicago by cpddan
@Someone1234 Apr 2018 Pushes back
on HN thread IIHS: Model S has higher collision claim frequencies than comparable luxury cars
This isn't great news for Tesla. This 30 second video also recently surfaced where someone reproduced the fatal accident involving autopilot from this week: [this video] This could also be bad for Tesla if this is what occurred. Interestingly in this video the chevron lines exist, something people have been claiming would have averted the accident, also interesting that no warning alarm sounded at any stage.
@Shivetya Apr 2018 Pushes back
on HN thread Tesla’s Musk Takes Charge of Model 3 Production as Problems Persist
Read more
The NHTSA faulted Tesla for the last fatal crash and its likely they will get faulted for the current. I am just shocked that after this one that they haven't suspended its use. The level of chutzpah this company operates at is very dangerous to its future but the public as well. The production issues are a whole different can of worms but the autonomous driving accidents are what the public sees. People need to understand that Tesla is not the only company that can deliver self driving hardware nor are they the only manufacturer of EVs. They are currently the maker of the more desired EV but with some of the old school automakers joining the fray they will see their high end model profit vanish. finally, I am still not convinced they ever plan to actually sell a base model. downvote edit Please see an owner recreation using the same version AP with the same condition z [this video] What is the rational thought it permitting that on the road.
@Someone1234 Apr 2018 Pushes back
on HN thread Tesla crash in September showed similarities to fatal Mountain View accident
Read more
If your point is "Autopilot only works on perfect roads" then they might have well pull the plug right now. Dirt, snow, rain, fog, dark, and other common conditions could obscure even correctly painted lines, and it just isn't realistic to expect perfect roads throughout such a large network anyway (in particular as human drivers can infer the line is meant to be there from the neighboring lines). At its core, a system like Autopilot is meant to stand in for humans. Plus in this video where they reproduced the accident there was a full chevron pattern so the argument is flawed/wrong anyway: [this video]
@userbinator Apr 2018 Pushes back
on HN thread Tesla Was Kicked Off Fatal Crash Probe by NTSB
Who cares if he had 5 seconds to see the barrier if he only had 0.5 seconds to realize that the car went into casual murder mode right as it veers into the barrier. This video is quite relevant: [this video] A fully alert driver trying (and succeeding) in reproducing this behaviour. Observe how long the barrier is visible, how long it takes him to react, and how close the car was to hitting the barrier.
@JetSpiegel Apr 2018 Pushes back
on HN thread Waymo Applies to Put Autonomous Cars on CA Roads Without Safety Drivers
> The car is always in control, and its primitive object avoidance routines won't let it crash into a barrier.The car is always in control, and its primitive object avoidance routines won't let it crash into a barrier. Of course, how inconceivable that a self driving car could crash into a static barrier! [this video]
@unityByFreedom Apr 2018 Pushes back
on HN thread Autonomous braking: 'The most significant development since the safety belt'
> Would the Volvo system have picked up and appropriately responded to the gore point involved in the recent fatal Tesla crash? I'd rather ask, would the Volvo system steer towards the barrier like Tesla's AP may have done [1] [2]? "IIHS research shows that AEB systems meeting the commitment would reduce rear-end crashes by 40 percent." [3] AEB on its own may save lives. Whether autosteer systems do or not is an open question. [1] [link] [2] [this video] [3] [link]
@Rebelgecko Jan 2019 Pushes back
on HN thread Tesla Autopilot HW3 details
I don't know of any. But for some cases that Teslas seem to have trouble handling, like plowing into stopped white vehicles or concrete dividers[1], I think a 2D LIDAR like this one[2] would still be useful enough to have saved lives. [1]: a la [this video] or [link] [2]: [link]

Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.

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