What is an important safety measure for officers directing traffic at busy intersections?

Wearing a high-visibility reflective vest is crucial for officers directing traffic at busy intersections because it significantly enhances their visibility to both motorists and pedestrians. High-visibility vests are designed with bright colors and reflective materials that make the officer easily recognizable even in low-light conditions. This visibility is essential in preventing accidents and ensuring that drivers can see the officer from a distance, allowing them to react appropriately and safely. Proper visibility helps to maintain a safe flow of traffic and keeps both the officer and the public safe in potentially hazardous situations, particularly in areas where visibility may be compromised by weather conditions or the surrounding environment. This is why wearing such a vest is emphasized as a key safety measure for traffic control personnel.