You may register for a course by contacting the instructor. If you are interested in knowing more about becoming a certified Flagging Instructor, contact ATSSA. ATSSA has certified flagging instructors in many states across the United States. Below you will find a list of classes that are currently scheduled for flagging professionals.
Check this site often for a current schedule (If you checked this site recently, you may need to click on the "reload" or "refresh" button to get current information).