Before entering the airfield, what is expected of drivers?

Answer: B — Conduct an operational test of their radio

Drivers are expected to conduct an operational test of their radio before entering the airfield. This requirement is critical for ensuring effective communication with Air Traffic Control and other personnel on the airfield. A functioning radio allows drivers to receive real-time instructions, report their position, and communicate any potential hazards, thereby enhancing safety for both the drivers and aircraft operations. While other tasks may seem relevant, such as checking fuel levels or reviewing emergency procedures, they do not specifically address the immediate needs of communication and operational awareness that are vital when driving in an active airfield environment. A visual inspection of the vehicle is also important for safety; however, it is the ability to communicate effectively that plays a crucial role in ensuring a safe and coordinated airfield operation.