Flags may be used in traffic control during which of the following situations?

Answer: B — Emergencies

Flags play a crucial role in traffic control, particularly during urgent situations where immediate action is needed to alert drivers and manage traffic flow. In emergencies, the use of flagging can help guide vehicles safely around hazardous areas, direct them away from potential threats, or facilitate the rapid response of emergency services. In emergencies, conventional traffic signals and signs may not be adequate or functioning properly, making flaggers essential for providing clear, real-time instructions to motorists. Their primary purpose is to ensure the safety of both drivers and personnel on-site by effectively managing traffic in unpredictable or dangerous conditions. While flags may also be used in other scenarios like regular road work or when visibility is clear, their most critical application is during emergencies, where quick, adaptable responses are required to ensure safety.