Question 387Navigation General70% to pass
If the main channel under a bridge is marked with lights of the lateral system the adjacent bridge piers should be marked with _______________.
AI Explanation
The correct answer is B) fixed yellow lights.
According to the United States Coast Guard Aids to Navigation System, bridge piers adjacent to the main channel marked with lateral system lights should be marked with fixed yellow lights. This helps clearly delineate the navigable channel and indicate the presence of the bridge structure to mariners.
The other answer choices are incorrect because: A) occulting white lights are not the standard marking for bridge piers, C) fixed white lights would not provide adequate contrast against the white lateral system lights, and D) flashing yellow lights are typically used to mark isolated dangers, not bridge piers.
Related Questions
#385 The white lights in a vertical line on a multiple-span bridge indicate _______________.#386 You are approaching a vertical lift bridge. You know the span is fully open when _______________.#388 The channel under a bridge is marked with lights of the lateral system. The centerline of the channel shall be marked on the bridge by _______________.#389 A bridge over a navigable waterway is being repaired. There is a traveler platform under the bridge's deck that significantly reduces the vertical clearance. If required by the CG district commander, how will this be indicated at night? #390 You are upbound approaching a lock and dam and see two green lights in a vertical line. This indicates _______________.