A free app for Android, by Navigation Wear.

The Head-Up Nav HUD Speed Limits Speedometer app is an accurate and convenient way to keep track of speed limits and other traffic hazards while driving. It can help you avoid crashes and collisions and reduce the risk of injury. The app is also useful for those who want to know more about the road ahead and if there are any speed limits and traffic restrictions. It is a great app for Android smartphones and tablets.

The app uses the Android System for Accessibility, which allows you to get a lot of information about your surroundings and make decisions based on that information. It is used by the Android OS to display all information about the location and the environment, such as the speed limit, the speed of the vehicle, and the presence of any hazards on the road.