484220 Specialized Freight (Except Used Goods) Trucking, Local 

This U.S. industry comprises establishments primarily engaged in
providing local, specialized trucking. Local trucking establishments
provide trucking within a metropolitan area that may cross state 
lines.  Generally the trips are same-day return.

The data published with NAICS code 484220 are comprised of these parts 
of the following SIC industries:

    4212 (pt)  Local specialized trucking without storage
    4214 (pt)  Local specialized trucking with storage