• icedterminal@lemmy.world
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    10 months ago

    Cars can already read speed limit signs without any form of tracking. What’s funny is it will read unofficial speed limit signs on private driveways. It’s anecdotal but a 2021 Camry I drove recognized a 10 mph sign that looked very similar to a DoT sign and displayed it on the dash.

    • skyspydude1@lemmy.world
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      10 months ago

      Working in the industry on these technologies, this is a horrible idea. I’ve driven vehicles that already have it, and it’s nice when it’s optional, but would legitimately be a hazard if it was on all the time.

      What happens when it’s dark and/or rainy, and it reads the 45MPH sign on the side road you were on, but misses the 70MPH sign when you’re actually on the highway? It limits your ability to actually accelerate to the flow of traffic as well, since it generally won’t change the speed until after you pass it. Or even better, you’re doing 70 and it catches a 35MPH on a side road adjacent to the highway? What happens if you just cover the camera and it can’t read anything? Does the car just go into limp mode and limit you to 25MPH?

      This isn’t a hypothetical, I see it happen very, very regularly in even the best systems available. They also probably won’t work for the lighted school zone speed limit signs by me, or the express lane type signs.

      Map based also eliminates school and construction zones, which is where you want this most,

    • BlindFrog@lemmy.world
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      10 months ago

      Thanks. Now I could easily see the havoc one troll with a sign can do with over-regulating like this.

    • nothing@lemm.ee
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      10 months ago

      Yeah I’ve seen that technology. But it definitely isn’t widespread.