This app will help you set your own Speed limits.Choose your top Speed and set mph or km/hChoose the alert type: Human voice or Siren.You want the alert to repeat itself every min you are over your set limit click V if not unmarked repeat alert to be alerted every time you cross set limit.Click on and you are ready to go.Speed Alert icon will show in you taskbar as long as app running.To close scroll down task bar and click Off