The article seems to mix up several systems. On the one hand, there's the limiter set by the driver (that you can override by pushing the pedal down hard), whi

The article seems to mix up several systems. On the one hand, there's the limiter set by the driver (that you can override by pushing the pedal down hard), which is usually activated by the same lever or buttons as cruise control but works differently - you accelerate to 50mph in a 50 zone, activate the limiter, and the car will not accelerate above that limit. You can just push the gas pedal down and hold your speed as long as the road is free. The other system is the sign detection (sometimes GPS assisted) which displays a limit sign on your dashboard and beeps at you if you go over it. My experiences as a passenger in the UK in a 2016 registration car: - It does not recognise that "chopsticks" (start of motorway) raises the limit to 70 mph unless stated otherwise. - It does not recognise a National Speed Limit sign built into an "end of roadworks" sign (which is the normal UK way to end a roadworks-based speed restriction on a motorway). - When one lane is out for works, there's usually big 60 (sometimes 50) signs for the cars and a very small 15 sign for the works vehicles. Sometimes, the camera picks up the 15 sign and beeps at you about that. I don't know if the technology has got better since. Maybe we can use AI or something.