Almost all public transportation operators belong to a union, such as the Transport Workers Union of America or the Amalgamated Transit Union. The American Public Transit Association is a group of public organizations, companies, and government agencies that are engaged in the areas of bus, paratransit, commuter rail, light rail, subways, waterborne passenger services, and high-speed rail. The National School Transportation Association is a professional organization for transportation-related private contractors, manufacturers, and suppliers.
- Air Traffic Controllers
- Airplane Dispatchers
- Airport Security Personnel
- Airport Service Workers
- App Services Workers
- Armored Truck Drivers
- Autonomous Vehicle Safety and Test Drivers
- Aviation Safety Inspectors
- Avionics Engineers
- Avionics Technicians
- Baggage Porters and Bellhops
- Civil Engineers
- Diesel Mechanics
- Driverless Car Engineers
- Fleet Maintenance Technicians
- Flight Attendants
- Flight Instructors
- Green Transportation Careers
- Hypersonics Engineers
- Hypersonics Technicians
- Locomotive Engineers
- Mechanical Engineering Technicians
- Mechanical Engineers
- Mobility Managers
- Non-Destructive Testing Specialists
- Pilots
- Race Car Drivers
- Railroad Conductors
- Reservation and Ticket Agents
- Ship's Captains
- Signal Mechanics
- Space Pilots
- Stevedores
- Taxi Drivers
- Toll Collectors
- Traffic Engineers
- Transportation Engineers
- Transportation Planners
- Truck Dispatchers
- Truck Drivers