Earlier quoted context omitted.
My threshold for what is safe is irrelevant, and we can change laws if we want. I can walk down to my sidewalk and have a half-ton vehicle going 45 mph drive within 20 feet of me in a moment. There is no question in my mind that that circumstance is much more dangerous than any delivery drone you care to send coming within half that distance. We live with some very generous tolerances for risk. But to speak to the Bl…
This sounds like your neighborhood needs some traffic calming. 20 is plenty.
Still, even going 20 or 35 mph is enough to kill someone, and 20 feet is not a lot of room, especially with no barrier between the sidewalk and the car. Last weekend, a driver swerved to hit a car that was stopped in the street and struck the tree on the corner of my lot. Luckily, no one was hurt, but the key word is "luckily." Anyone who'd been on the sidewalk would've been paste.
Compare that to the rather less immediate concern of a drone that might fall out of the sky, a drone that might clip me.