USCG USCG ROR
Set 3 • Question #291 of 475
Launch Interactive Practice Room INLAND ONLY Which light display marks the opening in a pipeline where vessels could pass through?
A
Two red lights in a vertical line on each side of the opening
✓ Correct Answer
B
Three red lights in a vertical line on each side of the opening
C
Two yellow lights in a vertical line on each side of the opening
D
Three white lights in a vertical line on each side of the opening
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'Which light display marks the opening in a pipeline where vessels could pass through', the correct requirement is: 'Two red lights in a vertical line on each side of the opening'. This standard ensures clear navigational intent and collision avoidance.
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