Air traffic control systems in operation today are ground-based, using technology that dates back to the 1960’s. Satellite-based control systems allow air traffic controllers to be more efficient. The U.S. is currently working on NextGen, a satellite-based air traffic control system that is being implemented in stages through 2025. GPS technology will be used to increase accuracy and shorten routes. NextGen is expected to save time and fuel, reduce air traffic delays, increase flight capacity and permit air traffic controllers to monitor aircraft with improved safety margins.

https://www.marshmma.com/blog/top-10-future-transportation-innovations