Columbia subject headings:
Labor unions--Transport workers--United States.
Transport workers--Labor unions.
Trucking--Law and legislation--United States.
Trucking--Law and legislation.
Harvard subject headings:
Transport workers--Labor unions.
Trucking--Deregulation--United States
Trucking--Government policy--United States.
Trucking--Law and legislation
Trucking--United States
Princeton subject headings:
Transport workers--Labor unions.
Trucking--Law and legislation.