LyrArc Article Gist
GPS and 3D would tell each plane the prcise location of other planes no need for all the radar towers and all that chattering back and forth. Look at the impact on gas mileage- just from this perspective it appears odd that the US government has not invested in modernization of the nations air traffic system's technology. The USA is today using outdated technology to mange its air traffic. Worst of all its costing a lot in wasted fuel and in extra emissions. GPS allows planes to fly straighter routes. Savings? On a NYCity to Boston flight this straighter route saves about 30% fuel, mileage and flight time. Thats huge savings benefiting airlines, passengers and the environment. These saving increase when you take out all the extra fuel consumed circlingin the skies as the descent is in steps. With NextGen the system the US is adopting will let a plane descend in a straight flight path with minimal engine thrust. A key part of this system is ADS-B for automatic dependent surveillance-brodcast, which gives every plane its own digital brain and voice.