This new system could help air taxis and drone deliveries avoid crashing

Popular Science 

Right now, if you're in the United States and you want to fly a drone, you have to keep the zippy little vehicle in sight. That, and you can't go any faster than 100 mph. No soaring over people, either, and keep its altitude under 400 feet. Those are the FAA regulations. But these rules present an obstacle for any company or organization that wants to use drones for practical tasks, like delivering packages or monitoring highway traffic.