Choose four of the following elements of the U.S. transportation system. List 2 benefits and 2 drawbacks of each element you choose:
The U.S. Highway System
The Interstate Highway System
U.S. Rail System, Intermodal Systems
Intercoastal Waterway
Intracostal Waterway
Lakes to Gulf System
Tennessee-Tombigbee Warrior River System
Air Transport System
Hub-and-Spoke System