Columbia subject headings:
Highway law--United States.
Motor vehicles--Standards--Law and legislation--United States.
United States. National Highway Safety Bureau--Appropriations and expenditures.
Harvard subject headings:
Highway law--United States.
Motor vehicles--Standards--Law and legislation--United States
United States. National Highway Safety Bureau--Appropriations and expenditures.
Princeton subject headings:
Highway law--United States.
Motor vehicles--Standards--Law and legislation--United States.
United States. National Highway Safety Bureau--Appropriations and expenditures.