A Certified Flagger is responsible for directing traffic around construction zones, road maintenance projects, or other work areas to ensure the safety of workers, drivers, and pedestrians. They use hand signals, signs, and flags to communicate with motorists and maintain an orderly flow of traffic. Flaggers must complete a certification course to learn proper signaling techniques, safety protocols, and state regulations. This role requires attentiveness, quick decision-making, and the ability to work in various weather conditions.