After going at least the minimum distance for flag protection, what must an employee do to protect adjacent tracks?

Displaying a lighted fusee is critical for providing visual warnings to approaching trains and other railway personnel. After an employee has completed the minimum distance necessary for flag protection, it is essential to ensure that safety measures are universally understood and visible to anyone who may be approaching the work area.

A lighted fusee serves as a clear indicator of potential danger and alerts operators of trains that they should proceed with caution. This form of protection is especially vital on adjacent tracks where trains may be operating, allowing the necessary time for oncoming train crews to recognize the warning and respond appropriately.

The other options might suggest alternative safety measures, but using a lighted fusee is specifically mandated in many operating rules as a direct means of providing warning signals that are easily observable from a distance. This immediate visual cue is vital in maintaining the safety of employees and preventing accidents on the railway.