484230  Specialized Freight (Except Used Goods) Trucking,
Long-Distance 

This U.S. industry comprises establishments primarily engaged in
providing long-distance specialized trucking. These establishments
provide trucking between metropolitan areas that may cross North
American country borders.

The data published with NAICS code 484230 are comprised of this part 
of the following SIC industry:

    4213 (pt)  Hazardous, agricultural and other specialized products 
               trucking (except local)