484121  General Freight Trucking, Long-Distance, Truckload

This U.S. industry comprises establishments primarily engaged in
providing long-distance general freight truckload (TL) trucking. These
long-distance general freight truckload carrier establishments provide
full truck movement of freight from origin to destination. The
shipment of freight on a truck is characterized as a full single load
not combined with other shipments. 

The data published with NAICS code 484121 are comprised of this part 
of the following SIC industry:

    4213 (pt)  General freight trucking (except local), truckload