such a system did exist on the American airlines jet, but it does not autocorrect or advise below 1000 feet, since an automated correction in such a busy, low a

such a system did exist on the American airlines jet, but it does not autocorrect or advise below 1000 feet, since an automated correction in such a busy, low area could make things worse. https://www.reddit.com/r/explainlikeimfive/comments/1idrsl6/eli5_why_dont_planes_have_traffic_collision/ https://www.reddit.com/r/explainlikeimfive/comments/1idrsl6/...