After coupling to locomotives that are being added to their train and stretching the coupling, is the engineer required to announce Red Zone before fouling the equipment?

• A. Yes, announce Red Zone before fouling.
• B. No, verify set and centered.
• C. Only after connecting hoses.
• D. Only if instructed by the conductor.

Answer: (B)

When locomotives are being added and the coupling is being stretched, the key safety step is to confirm the coupler is properly aligned before continuing. Verifying that the set is correct and the coupler is centered ensures a smooth, safe connection and helps prevent damage or misalignment as the locomotives come together.

In this context, announcing Red Zone before fouling isn’t the required action. The immediate priority is confirming the mechanical fit—set and centered—so you can foul or move into position safely if needed. The other options either introduce a warning step prematurely, imply waiting for hoses or conductor instructions, or occur after a later stage, which isn’t the designated action here.