[andrewstuart2]

Not to mention that almost all civilian planes in the US are required to broadcast a bunch of details that include their coordinates and altitude on a public channel (ADS-B). It's the kind of automated collision avoidance input that you'd probably dream of as a self-driving system engineer. Basically the only thing you'd need to avoid via more complex systems is the odd military traffic, small craft at low altitudes, and birds.