Columbia subject headings:
Urban transportation policy--Europe.
Urban transportation policy--North America.
Urban transportation--Europe.
Urban transportation--North America.
Harvard subject headings:
Urban transportation policy--Europe.
Urban transportation policy--North America.
Urban transportation--Europe.
Urban transportation--North America.
Princeton subject headings:
Urban transportation policy--Europe.
Urban transportation policy--North America.
Urban transportation--Europe.
Urban transportation--North America.