| Government establishments primarily engaged in regulation, licensing, planning, inspection and investigation of transportation services and facilities. Motor vehicle and operator licensing is classified here. Establishments of the Coast Guard that perform functions related to the regulation, administration and operation of transportation are included here. Also included in this industry are civilian government air traffic control and aircraft inspection establishments. Parking authorities are classified here, but the operators of lots and garages are classified in Services, Industry 7521. Operators of railroads, subways, depots, ports, toll roads and bridges, and other transportation facilities are classified in Transportation and Public Utilities, Division E. Highway construction and maintenance are classified in Construction, Industry 1611. Military establishments primarily engaged in air traffic control operations are classified in Industry 9711 and private establishments engaged in air traffic control operations are classified in Transportation and Public Utilities, Industry 4581. |
