This industry comprises government establishments primarily engaged in the administration, regulation, licensing, planning, inspection, and investigation of transportation services and facilities. Included in this industry are government establishments responsible for motor vehicle and operator licensing, the Coast Guard (except the Coast Guard Academy), and parking authorities.

• Aircraft inspection, government
• Coast Guard (except academy)
• Federal Aviation Administration (except air traffic control)
• Licensing of transportation equipment, facilities, and services
• Merchant Marine (except academy)
• Motor carrier licensing and inspection offices
• Motor vehicle licensing offices, government
• National Transportation Safety Board
• Port authorities and districts, nonoperating
• Public transportation commissions, nonoperating
• Railroad and warehouse commissions, nonoperating
• Transit systems and authorities, nonoperating
• Transportation departments, nonoperating
• Transportation regulatory agencies
• Transportation safety programs, government