Industry: 9621—Regulation and Administration of Transportation Programs
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,

Air traffic control operations—governmentPort authorities and districts—nonoperating
Aircraft inspection-governmentRailroad and warehouse commissions—nonoperating
Licensing and inspection of transportation facilities and services-governmentTransit systems and authorities—nonoperating
Motor carrier licensing and inspection offices—governmentTransportation departments—government
Motor vehicle licensing and inspection offices—governmentTransportation regulatory agencies—government
Codes Titles Number of US Businesses
9621Regulation, Administration of Transportation10,596
962100Regulation, administration of transportation4,620
96210000Regulation, administration of transportation4,620
962101Aircraft regulating agencies811
96210100Aircraft regulating agencies47
96210101Air traffic control operations, government756
96210102Aircraft inspection, government8
962102Licensing agencies1,631
96210200Licensing agencies741
96210201Licensing, inspection: transportation facilities, services135
96210202Motor carrier licensing and inspection office, government41
96210203Motor vehicle licensing and inspection office, government714
962103Water vessels and port regulating agencies800
96210300Water vessels and port regulating agencies74
96210301Coast Guard, regulation and administration of transportation640
96210302Port authority or district: government, nonoperating86
962104Regulation, administration of transporatation, level of government1,219
96210400Regulation, administration of transportation, level of government16
96210401Regulation, administration of transportation, Federal government327
96210402Regulation, administration of transportation, State government467
96210403Regulation, administration of transportation, County government173
96210404Regulation, administration of transportation, Local government236
962199Regulation, administration of transportation, nec1,515
96219901Bureau of public roads726
96219902Interstate Commerce Commission31
96219903Railroad and warehouse commission, government52
96219904Transit system or authority: government, nonoperating64
96219905Transportation department: government, nonoperating642