Columbia subject headings:
Infrastructure (Economics)--United States.
Transportation and state--United States.
Transportation--United States--Forecasting.
Transportation--United States--Planning.
Harvard subject headings:
Infrastructure (Economics)--United States.
Transportation and state--United States.
Transportation--United States--Forecasting.
Transportation--United States--Planning
Princeton subject headings:
Infrastructure (Economics)--United States.
Transportation and state--United States.
Transportation--United States--Forecasting.
Transportation--United States--Planning.