What signals are used by employees performing flagging duties during the day?

The answer involves understanding the specific requirements for flagging duties during daylight. Employees performing flagging duties use a red flag, which is the universal signal for stopping or caution, ensuring that trains recognize the need to halt or slow down when approaching a flagger or an area of concern. The use of 5 fusees in conjunction with the flag emphasizes visibility and alerts train crews even further, providing a clear and immediate warning that is vital for safety on the track.

Using a red flag with 5 fusees is established practice within railroad operations to ensure that staff are unmistakably signaling their presence and the need for caution, particularly in busy or hazardous work areas. This system is crucial for maintaining safety and preventing accidents on the railroad. Other signal combinations represented in the incorrect responses do not conform to the established flagging protocols for day operations.