488999  All Other Support Activities for Transportation 

This U.S. industry comprises establishments primarily engaged in
providing support activities to transportation (except for air
transportation; rail transportation; water transportation; road
transportation; freight transportation arrangement; and packing and
crating).

The data published with NAICS code 488999 are comprised of these 
parts of the following SIC industries:

    4729 (pt)  Arrangement of carpools and vanpools
    4789 (pt)  Other support activities incidental to transportation