Which control measure could help ensure the safety of pedestrians and site personnel?

Utilizing a flag person is an effective control measure for ensuring the safety of pedestrians and site personnel in an environment where forklift operations are carried out. A flag person acts as a visual and verbal guide, directing the movements of both vehicle operators and pedestrians. This individual can effectively communicate warnings and instructions, thereby minimizing the risk of accidents and ensuring that everyone is aware of the ongoing activities within the work area.

Flag persons are particularly useful in busy sites, where visibility may be compromised or where blind spots could create hazardous situations. Their presence helps to manage traffic flow effectively, ensuring that pedestrians maintain a safe distance from operating machinery, particularly forklifts that can maneuver quickly and in tight spaces.

The other options, while they may have their own applications in safety protocols, do not provide the immediate and direct communication and control that a flag person offers in real-time, dynamic settings where pedestrian safety is paramount.