Until now, we use helicopters to perform traffic control. But we do know that drones could be used for monitoring traffic and it is more efficient and has more of use. Drones will not only use to monitor road traffic, it can be used to catch drivers that over speed.
I strongly agree with you that drones will effectively replace helicopter from traffic control to car chase.
And this will lessen the used of oil products in aeronautics if they will replace helicopter.
Drones can be easily used to monitor and track those reckless driver on air without delay because they can use their camera for
easy tracking and monitoring.