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 Transportation10,564
962100Regulation, administration of transportation4,601
96210000Regulation, administration of transportation4,601
962101Aircraft regulating agencies808
96210100Aircraft regulating agencies47
96210101Air traffic control operations, government753
96210102Aircraft inspection, government8
962102Licensing agencies1,631
96210200Licensing agencies745
96210201Licensing, inspection: transportation facilities, services135
96210202Motor carrier licensing and inspection office, government41
96210203Motor vehicle licensing and inspection office, government710
962103Water vessels and port regulating agencies796
96210300Water vessels and port regulating agencies75
96210301Coast Guard, regulation and administration of transportation633
96210302Port authority or district: government, nonoperating88
962104Regulation, administration of transporatation, level of government1,215
96210400Regulation, administration of transportation, level of government16
96210401Regulation, administration of transportation, Federal government327
96210402Regulation, administration of transportation, State government466
96210403Regulation, administration of transportation, County government170
96210404Regulation, administration of transportation, Local government236
962199Regulation, administration of transportation, nec1,513
96219901Bureau of public roads727
96219902Interstate Commerce Commission30
96219903Railroad and warehouse commission, government51
96219904Transit system or authority: government, nonoperating63
96219905Transportation department: government, nonoperating642