If you have the navigation SD card installed it displays the speed limit of the road you’re on if it is in the navigation’s data base. If you have the speed limit warning selected in the car‘s settings, the speed limit “sign” will change color when you exceed the speed limit (or the over speed limit margin selected in settings). I believe some people have reported seeing “stop signs” showing up in the US but I haven’t seen this yet. If you have a route set with the navigation SD option (not using navigation with CarPlay or Android Auto) it will give you next turn information.