Large aircraft aren't generally allowed to fly low over cities unless they're taking off or landing from an airport. If a drone is going to be taking off and l

Large aircraft aren't generally allowed to fly low over cities unless they're taking off or landing from an airport. If a drone is going to be taking off and landing in residential areas, it'll necessarily be flying a lot lower. (I expect a lot of current drones might run out of battery before they could even reach 1000+ feet, where regular planes fly.) There's a lot of empty space in the sky, it's not hard to keep drones and Cessnas away from each other. Laws won't stop people from flying drones where they shouldn't, but if caught they could be confiscated or the operators fined. If nuisance drones are a problem, we'll need "police drones" to chase them down and disable them. Sort of like how FCC regulations can't stop me from broadcasting a radio station on a frequency I'm not allowed to transmit on if I'm really determined to do it, but they can locate me, fine me, and generally give me strong incentives not to do it again.