Is it safe for a free range operator to occupy a high-speed taxiway while the runway is active?

The correct response indicates that it’s essential for a free range operator to avoid occupying a high-speed taxiway while the runway is active, unless directed by Air Traffic Control (ATC). This is primarily due to safety protocols that govern the movement of vehicles on the airside of the airport.

When the runway is active, aircraft may be taking off or landing, which creates a significant risk for any vehicle on or near the taxiway. ATC provides instructions for vehicle movements to ensure the safety and separation of air traffic and ground operations. If a vehicle were to occupy a high-speed taxiway without ATC clearance, it could potentially lead to dangerous situations such as runway incursions, which are serious safety risks in aviation operations.

The other options suggest varying degrees of permissiveness regarding presence on the taxiway, but they do not align with the critical safety protocols that require explicit ATC permission in order to maintain operational safety at the airport. This adherence to ATC directives is a fundamental aspect of safe airside operations.