Drones made eyed as Tools in Traffic War, they monitored wildlife along intracoastal water ways.
Drones can used also for inspecting bridges for damage,conducting airport flights path inspections.
The potential using of drones is including from traffic management to inspections traffic signals or sampling vehicles speed along particular corridors.
I wonder how were airports around the globe doing it all these years with out drones but if it takes drones to make everything for them more easy and convinient then it will be good. But i think in land traffic monitoring they made it good with cctv. Here in my place they have phone application here called WAZE. WAZE direct motorists in their daily travel and also suggesting better routes with less traffic. Until now it is still good and everyone here is using this application.