The speed limit detection exists on my US Toyota vehicle, but it doesn’t beep or nag, just tells me what it thinks the speed limit is on the HUD, which is nice. Although when I drove through Georgia the interstate has all these minimum speed signs that look close enough to speed limit signs that fully half the time through Georgia it thought the speed limit was 40mph instead of 80mph. It would have been an absolute nightmare drive if it had beeped intermittently for 6 hours.