Rethinking The Interstate's State-Federal Relationship

The National Commission will face a vastly different set of circumstances than those that prevailed twenty five years ago when the Interstate system was reaching completion. Since 1980, traffic on the Interstates has more than doubled --- from roughly 296 billion VMTs [vehicle-miles traveled] in 1980 to more than 702 billion VMTs in 2003--- while capacity of the system has remained virtually unchanged.

...Highway capacity will need to be expanded in critical places to keep pace with projected growth in vehicle-miles of personal travel and freight movements. Additionally, new infrastructure will have to be provided to accommodate emerging new population concentrations and changing travel patterns."

Thanks to Chris Steins