Question 332 Rules of the Road

The correct answer is C) Two red lights in a vertical line on each side of the opening. This is correct because according to the United States Coast Guard regulations, two red lights in a vertical line on each side of an opening in a pipeline mark the location where vessels can pass through. These lights are used to indicate the safe passage area for vessels to navigate through the pipeline. The other options are incorrect because they do not match the standard Coast Guard marking for pipeline openings. Three red lights, three white lights, or two white lights would not be the proper display to mark a pipeline opening for vessel passage.