Minimal traffic? An ATPL pilot here. Fly into any major airport and you'll see that it can be REALLY BUSY. The system is based around separation down to about 1

Minimal traffic? An ATPL pilot here. Fly into any major airport and you'll see that it can be REALLY BUSY. The system is based around separation down to about 1 minute. Major airfields are all traffic limited (hence "slots"). 1 minute might seem like a lot when you're walking or driving, but when coming in at 200mph in something that weights hundreds of tons ... I want that guy 1 minute ahead of me off the runway ;) And that's considering that existing traffic is of similar speed and ability. Adding slow, small, low-performance aircraft to the mix makes things very interesting ;( Then add low-experience pilots who have to stop and think about procedures, actions, radio calls ... permission to back their car out of their driveway - It might be different if those cars cost $100M-$300M. A tiny bingle is very expensive.