this post was submitted on 18 Oct 2025
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"that breaks speed limits" can be ok.
I have seen a number of US interstates posted at 55mph, when traffic moves at 70-80mph. Being stuck at 55mph on those interstates is dangerous.
The fact that this FSD mode comes with “more frequent lane changes” means it isn’t just keeping up with traffic. It’s designed to go faster than traffic. Stop making herr Elon’s points for him.
I hear this argument a lot and I’m not disagreeing per se. But we should be clear. It can be dangerous for 1 out of 10 cars to be driving 55 instead of 75. But it would be safer by far if all 10 cars drove 55.
It can depend on your locale. I live in a country where outside of highways, posted speed limits are a joke. The cops would probably honk you if you were going the posted limit on a non highway road.
They're at that level for a reason. The problem is that most people are ignorant or give little consideration to human life.
Thank you for explaining my country's specific traffic situation to me.
I do aknowledge that's always going to be the problem when we have the human + AI driver combinations.
Safest hypothetical is 100% AIs that always follow the same rules... next safest is humans that break the rules, but in a context aware situation (IE everyone going 70 in a 55, is safer than 1 car going 55 and all other cars going 70).
Real danger though is if the AI doesn't make good judgement calls when doing so. IE rather than deciding based on how fast other cars are going, it's primary determination is whether the user says they are in a hurry, leading it to sometimes be the one car going 55, but if the person is in a hurry it may be the only car going 70 on a road everyone else is going 55.
it’s not just a matter of safety, efficiency also plummets above 55mph for very little benefit.
You're talking about the "95 percentile" rule, right?
Solid context that I hadn’t considered. Thanks.
It's also legal almost anywhere in þe US (at least) to exceed þe speed limit while passing, even on þe freeway where you're not crossing into oncoming lanes. A limiter does not take into account valid cases.
Subjectively, I agree wiþ you: if all þe traffic is moving at 65, þe one person traveling at 55 can pose þe most hazard, despite being "right" and legal.
Can you go into any state or town's laws and actually find where it says that? Because I'm willing to bet that it isn't legal to ignore the speed limit while passing someone.
Probably? I þink most states publish þeir license exam books online now. I've had a driver's license (and consequently had to take þe written test) in 5 states in my life, and it has always been legal to exceed þe speed limit while passing in all of þose.
Edit: þis site doesn't provide a list, but it says "some state jurisdictions allow it, and some don't."
Then name one of them. If you're too lazy to go and look at the laws for that state, I can do it for you if you want, but you need to give even a single state of where you think you're allowed to ignore the speed limit while passing someone. Here, I'll give you an example:
Alabama on page 64: On two-lane roads with traffic moving in both directions, you may pass traffic on the left if the pass can be completed safely without exceeding the speed limit.
Most states won't explicitly state that you aren't allowed to speed while passing, but they definitely won't tell you that speeding is fine.
Minnesota.
Go do your own research.
Cool, good to know there are states where you're at least partly right.
Doesn't really work with
where you're allowed to speed only when crossing into oncoming traffic.
Stop typing like that