You are approaching a swing bridge at night. You will know that the bridge is open for river traffic when __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — the red light changes to green
In USCG General Navigation principles (Bowditch, Light Lists, and Coast Pilots), regarding 'You are approaching a swing bridge at night. You will know that the bridge is open for river traffic when', the verified fact is: 'the red light changes to green'.
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