Proof from outside my office. Accessibility for man and beast. This family gathered on the walk, then got bored and stood in the street. A passing car stopped and honked; a move that was probably misinterpreted. Another group joined them in the street from across the way, then they all waited. Another honk from the car, and they all used the roadway for a runway, and were in V formation before they were 3 feet off the ground.