Trucks are perfectly fine with waiting outside the freight hub if the transportation management software goes down and loses track of everything. A plane in the air is a ticking time bomb that needs to get on the ground before the fuel runs out. Two trucks being just feet away from each other at speed is perfectly fine. Two planes being within half a mile of each other when they shouldn't be is a critical emergency.
Problems in 2D space are amazingly forgiving compared to those that occur in 3D space. The caution civil aviation has is because of the history of flying that is written in blood.
Problems in 2D space are amazingly forgiving compared to those that occur in 3D space. The caution civil aviation has is because of the history of flying that is written in blood.