What should the conductor ensure regarding markers?

The correct emphasis is on the conductor’s responsibility to ensure that markers are displayed at all times. Markers serve a critical purpose in rail operations, as they provide visibility and convey important information regarding the train's position, length, and other vital safety aspects to both crew members and other railway personnel.

Displaying markers consistently is essential for maintaining safety protocols and effective communication within the rail system. When markers are visible, it helps prevent accidents by alerting others to the presence of a train or providing information about track conditions, particularly in areas where visibility may be hindered.

In contrast, there are specific situations where the display of markers may not be appropriate or necessary, such as in yards or during maintenance, but the overarching rule is to ensure they are visible during regular operations. This fundamental practice ensures that all safety measures are adhered to while maintaining efficient train movements.