Columbia subject headings:
Federal aid to transportation--United States.
Roads--United States--Finance.
Toll roads--United States.
Transportation, Automotive--Taxation--United States.
Harvard subject headings:
Federal aid to transportation--United States.
Highway planning--United States
Roads--United States--Finance.
Toll roads--United States--Finance.
Transportation, Automotive--Taxation--United States.
Princeton subject headings:
Federal aid to transportation--United States.
Roads--United States--Finance.