The FAA mandates that anyone who operates a vehicle in areas that allow access to active taxiways and runways without the presence of a physical barrier must be trained in accordance with FAR Part 139.329.
Non-Movement Area: Area of an airport where Air Traffic Controller (ATC) is NOT required for ground vehicle operation. Example: Apron/ramp, ground vehicle parking, aircraft gates.
Movement Area: All paved surfaces where ATC permission is required before entering. Example: runways, taxiways.