Would the development of more efficient ground transportation systems solve the problem?

Without a doubt, increasing the public's use of mass transportation (light rail, commuter trains, buses) will ease the congestion on the roadways. Increasing bus and train routes between popular destinations that are less than 900 miles apart would make it more convenient for travelers to use ground transportation instead of air transportation for shorter trips. Also, incorporating airports into daily transportation stops for lightrail, commuter trains and buses will make airports more easily accessible for the air travelers.