Drones. There will also be noise pollution. No?
Air Traffic Control for Drones
Air Traffic Control for Drones
7,500 unmanned craft weighing 55 pounds (25 kilograms) or less will be operating in the U.S. by 2018. There is strong interest from agriculture, mining, and infrastructure companies in using drones for tasks like inspecting crops or gathering geospatial data .... gridlock in the skies, or at least increasingly unsafe traffic patterns. ...... If a drone strayed out of its approved area, for example, the system might automatically send a command that made it return to its assigned area, or land immediately. ..... Airware believes that equipping drones with cellular data connections could be the best option. The equipment that conventional aircraft use to communicate or send digital data to air traffic control systems is too bulky for use on drones. ..... Giving drones relatively free reign below an altitude of a few hundred feet, except in the vicinity of airports, would mostly remove conflict between drones and general aviation