What should the crew confirm regarding opposing movements before entering a warrant segment?

• A. Line clearance with any opposing movements.
• B. The weather forecast.
• C. The passenger count.
• D. The color of the caboose.

Answer: (A)

Before entering a warrant segment, the crew must verify line clearance with the controlling authority. Line clearance means confirming that the segment is free of any opposing movements or other trains that could conflict with your route, giving you the authority to occupy that block safely. This safety check matters because an opposing train could be approaching or already in the segment, and entering without clearance risks a collision. The other options aren’t related to the safety and authorization needed to enter a warrant segment: the weather forecast, passenger count, or the color of the caboose do not determine whether the track is clear for your movement.