- Bus transportation (31)
- Bus line operations (18)
- Commuter bus operation (2)
- Street and trolley car transportation (1)
- Trolley operation (1)
- Airport transportation (116)
- Airport limousine, scheduled service (30)
- Airport transportation services, regular route (10)
- Passenger rail transportation (3)
- Commuter rail passenger operation (2)
- Local railway passenger operation (1)
- Subway operation (6)
- Monorails, regular route: except amusement and scenic (1)
