Which type of surfaces require radio clearance from ATC for vehicle entry?

The type of surfaces that require radio clearance from Air Traffic Control (ATC) for vehicle entry are the manoeuvring areas. These areas include runways and taxiways where aircraft are actively operating and require coordination with ATC to ensure safety and prevent accidents.

When vehicles are requested to enter or operate in these high-traffic zones, ATC must provide authorization to maintain order and control over the aircraft and vehicles. This clearance is essential for maintaining a safe distance between the vehicles and aircraft, as both are navigating the same restricted airside environment.

In contrast, other areas such as movements areas, uncontrolled surfaces, and terminal areas do not have the same strict requirement for radio clearance from ATC. Movements areas encompass a broader range, but not all sections necessitate ATC interaction for vehicle access. Uncontrolled surfaces could refer to non-manoeuvring areas where there is less activity or supervision, and terminal areas pertain more to passenger handling and airport operations rather than direct vehicular access requiring ATC authorization.