The cameras on my Kia read limit signs and displays the sign on the dash. I can set my adaptive cruise to change speed based on the posted signs. I have to make a 8 hour drive six times a year and that adaptive speed changing is bliss. I can even set it to posted speed +5 mph. The display will even show a yellow school zone bar on the bottom of the speed limit sign on the dash. It’s surprisingly fancy. It even picks up charges based on construction so I know it’s using the cameras and not gps.