I'm surprised to see that the U.S. has the yellow symbol indicating that to fly a drone a license or permit is required.
I don't feel that is true. While drones can't be flown in some restricted areas for safety, security or other reasons, and banned from all National Parks, I've had no problems flying anywhere over several states. Inj fact in the state of MI, local municipalities are not even permitted to enact ordinances prohibiting them.
Can somebody please explain why the U.S. has a Yellow symbol rather than a green one?