Columbia subject headings:
Harvard subject headings:
Trucking--Deregulation--United States
Trucking--Economic aspects--United States.
Trucking--Law and legislation--United States
Princeton subject headings:
Transport workers--Labor unions--United States.
Truck drivers--Legal status, laws, etc.--United States.
Trucking--Deregulation--United States.
Wages--Truck drivers--United States.