Where would you find information if yellow or yellow-red flags are displayed less than the required distance?

The correct choice refers to where critical operational instructions are documented for conductors and other railroad personnel. When yellow or yellow-red flags are displayed, it indicates a warning of potential hazards or work being conducted on or near the tracks. The guidelines for the required distances related to these flags are specified in official documents that govern track operations, including track bulletins, track warrants, or general orders.

Track bulletins provide real-time updates and safety information regarding track conditions and operations, while track warrants outline specific instructions for train movements. General orders contain broader directives that can encompass various operational protocols. These documents ensure that all railroad employees, including conductors, are aware of the specific distances that must be adhered to for safety when faced with flag warnings.

The alternative options do not specifically focus on operational directives relevant to flag meanings and distances. Work orders typically relate to specific tasks for crews, Chief Engineer Instruction Bulletins might pertain more to engineering practices and maintenance than daily operational alerts, and safety manuals generally cover broader safety protocols rather than specific situations involving flag displays on the track.