But the overall air system's safety is built on redundancy, and taking away the controller's extra set of eyes is like removing stop signs or traffic lights from city intersections and forcing drivers to be more vigilant and cautious, says Paul Rinaldi, president of the National Air Traffic Controllers Association.
Instead of only using street names, Garmin Real DirectionsTM guide drivers just like a friend would by telling them to turn at recognizable landmarks, buildings, stop signs and traffic lights.