Columbia subject headings:
Federal aid to transportation--United States.
Infrastructure (Economics)--United States.
Transportation--Taxation--United States.
Transportation--United States--Finance.
Harvard subject headings:
Federal aid to transportation--United States.
Infrastructure (Economics)--United States.
Transportation--Taxation--United States.
Transportation--United States--Finance
Princeton subject headings:
Aeronautics, Commercial--Taxation--United States.
Infrastructure (Economics)--United States--Finance.
Transportation, Automotive--Taxation--United States.
Transportation--Taxation--United States.
Transportation--United States--Finance.
User charges--United States.