Taxiway intersections with the MOS are marked by three cones, spaced three feet apart, in what formation?

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Multiple Choice

Taxiway intersections with the MOS are marked by three cones, spaced three feet apart, in what formation?

Three markers spaced evenly around an intersection form an equilateral triangle. With each side equal, the three cones create a symmetric shape that pilots can recognize quickly from any approach direction, which is why this formation is used to mark MOS intersections. A straight line wouldn’t provide the same three-way, angle-independent cue, a rectangle would need four markers, and a right triangle wouldn’t produce equal distances between all three points.

Three markers spaced evenly around an intersection form an equilateral triangle. With each side equal, the three cones create a symmetric shape that pilots can recognize quickly from any approach direction, which is why this formation is used to mark MOS intersections. A straight line wouldn’t provide the same three-way, angle-independent cue, a rectangle would need four markers, and a right triangle wouldn’t produce equal distances between all three points.

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