Not surprising to anyone that ever driven a Tesla, or other brand car really. The speed sign detection only works about 90% of the time, which is fine if you are in control, but for self driving? Had the same with BMW, Mercedes, Renault, Honda. None of the cars I've driven over the past years were close to 100% correct with reading signage.
this post was submitted on 24 Jun 2025
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It's almost as if we need a nationwide GPS driven speed limit detection system, rather than relying on some crappy cameras.
That way manual drivers can be warned if they're exceeding the limit as well.
Even nationwide GPS speed detection isn't flawless. What if an accident happens or for road works, then a temporary speed reduction can be applied. The autonomous driving system must be able to detect those situations and handle them gracefully. But also coming out of that temporary speed restricted zone. What if the car doesn't detect the end of the zone? Then the autonomous vehicle can drive dangerously slow until the next sign.
You could certainly have both systems in place, with it always picking the lowest.
But you do want to avoid daft things, like seeing a parked lorry with "I'm speed to limited to 50" written on it, with the 50 in a red circle, and the car goes "50? Brilliant!" and zooms off past a school.
Yeah, it's so horrible especially when it reads a speed limit from an adjacent road or, even worse, from a label on the back of a truck
Wait a second. Are you saying we can hack them? This is wonderful.
It's not at all difficult to do really. Just steal one 30 kph sign and place it on the highway and let carnage ensue.
Seems like it would be jail time if you get caught. Or serious prison time if it causes a fatal accident.
Well yeah obviously
I've noticed that, too.
The speed signage is nice when the car picks it up, but I'd call mine 80% accurate. Imperfect, but fine for a driver assist, I know not to rely on it.
Crazy move to put it in a 99.9999%-accuracy-required design.
Google maps knows the speed limit of most roads, why can't that be used?
Not super reliable, one road near me is 25mph and google says it's 65mph.
Oh, well that answered that question. Get your shit together tech bros
Because the "Google thought so" approach is legally problematic.
Ah, that makes sense.
The true believers should volunteer to show off the Tesla's obstacle detection by standing in front of them.
In reality it will be some mom with a van full of kids in front of them.
Only time until they do. Just like the ones that broke or crushed their fingers with the Cybertruck
What a moment for Musk to show true leadership.
He would sooner put his own son in the path. He has backups for a reason.
Delamain this ain't
is tesla == arasaka? But maybe not, because arasaka is actually competent
These things are gonna kill so many people...
Man, this makes me wonder if maybe robotaxis might finally be the thing that gets people to take road safety enforcement seriously. Like imagine if Tesla advertises that their taxis will break speed limits because rare speeding fines are trivial to their business. Would this make people actually support speed cameras or hefty speed enforcement fines?
Oh man it was just blasting through those speed bumps lmao.
"nice"
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