Ohio test uses drones to monitor highway traffic You wouldn't need helicopters to spot road trouble. June 20, 2018 https://www.engadget.com/2018/06/20/ohio-test-uses-drones-as-highway-traffic-monitors/
I think this program a great idea but flying a drone back and forth along a 35 miles stretch of road for 3 years takes $5.9 million to start this program? Me thinks someone is getting rich here.