Columbia subject headings:
Traffic safety--United States.
Truck accidents--United States.
Truck drivers--United States.
Trucking--United States--Safety measures.
Trucks--United States--Accidents.
Trucks--United States--Safety measures.
Harvard subject headings:
Traffic safety--United States
Truck accidents--United States.
Trucks--United States--Safety measures.
Princeton subject headings:
Traffic safety--United States.
Truck accidents--United States.
Trucks--United States--Safety measures.