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this post was submitted on 15 Oct 2024
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Enough Musk Spam
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Friend ran afoul of the Tesla's Drive-By-Wire. She had her car on automatic drive and it was speeding towards the bumper of another vehicle. She slammed on the brakes, but because the system has to switch from automatic to manual, the brakes didn't engage for a critical second. So she ended up jamming her car into the rear end of the vehicle in front of her, and her system recorded the event as "human error", because she was at the wheel when the collision occurred.
Now she's out several grand in repairs that her insurance won't cover, because she failed to let Tesla's autodrive system take responsibility for the collusion by trying to prevent it.
Stories like this are what make me incredibly hesitant to buy a Tesla.
As other commenters have said, this is just not how the system works. Something was misunderstood or some context was probably lost somewhere. I have driven a new-ish 2021 Model 3 as a daily, and there are basically 2 modes of auto driving. One is autopilot, which is very similar to adaptive cruise control with lane-keep assist in other cars. Then there's full self-driving, which is supposed to be you entering a destination and your car will take you there with minimal interference. You also need to pay out the wazoo for that FSD functionality. Tesla needs you to be vigilant in both cases, and you're responsible for a crash in both cases. Now onto the brakes, in either system, when you press the brakes, the car immediately applies brakes. On occasion, it's taken the automated driving system a second to shut off when I apply the brakes, but I have always felt the brakes immediately kick in. Teslas at the moment do not have brake-by-wire. They have throttle-by-wire (duh, EVs), and steer-by-wire on some of the more recent higher end models. All of them have a hydraulic braking system where your foot on the pedal is immediately converted to braking pressure. Your friend is mistaken, and the crash is their responsibility for not maintaining vigilance. Afaik, very few companies are at self-driving tier 3, which is where the company would be responsible for a crash. Tesla is not there yet.
I've got the dashcam footage and I know the driver. She can tell me when she hit the brakes, and she says she had the peddle as far down as it would go. The car didn't begin decelerating in the same way an analog breaking system would have. That cost her a critical second and resulted in her rear-ending the vehicle in front of her.
Then maybe the breaks were bad. Idk. But she had plenty of lead time (presumably thanks to the super-advanced cruise control or whatever you want to call it) at the beginning of the video. The vehicle simply didn't stop in time.
As someone who owns a Tesla, I can attest this isn't how the brakes work. We'd heard similar rumors to this effect and it was the first thing we tried on the test drive. The brakes are 100% functional 100% of the time, regardless of driving assist.
Even if "full self driving" (quotes intentional, that shit is not fully self driving) did cause an accident, the driver is perfectly capable of avoiding it by braking or taking over steering.
P.s. Fuck Elon Musk
Is that true for all Tesla models though? I was under the impression the newer models had blended braking, which would make this story somewhat plausible.
To the best of my knowledge, which includes a few minutes online trying to prove myself wrong, the brakes on all Tesla models are straight friction - no blending. Regenerative braking only happens when the accelerator is released. The friction brakes alone are sufficient to kick in ABS, so regen isn't needed to help stop the car.
After giving it some thought, I suspect the car wasn't stopping fast enough, so the driver took over and just didn't brake hard enough to prevent the accident (possibly because they were anticipating some amount of assist from regenerative braking). Underestimating how hard to brake is very common and is one of the primary reasons behind adding automatic braking systems.
Your friend lied to you.
This had me confused for a second, as these are types of transmissions. Wouldn't 'A.I.to human' driving be a more accurate description?
Is this why their new robotaxis have no controls? Liability over safety?