What should a driver do if they encounter a flashing red light on the airfield?

Answer: B — Stop immediately and wait for instructions

Encountering a flashing red light on the airfield signifies a critical alert that requires immediate action from the driver. The flashing red light indicates that the driver must stop immediately. This requirement is in place to ensure safety on the airfield, as it can signal a variety of conditions, such as the presence of aircraft or personnel, or a temporary restriction in that area. Stopping and waiting for further instructions allows the driver to prioritize safety and avoid potential collisions or accidents. Conditions on the airfield can change quickly, and this response gives the driver the opportunity to assess the situation and proceed only when it is safe to do so. Understanding this protocol is vital for maintaining safety for all personnel and equipment on the airfield.