What color are the X's used on closed or nonoperational runways?

Prepare for the AC2 Advancement Test with comprehensive materials. Review flashcards and multiple-choice questions with explanations and hints. Start your journey to success today!

Multiple Choice

What color are the X's used on closed or nonoperational runways?

When a runway is closed or not in operation, large X marks are placed to clearly indicate it isn’t usable. These Xs are yellow for visibility, and they are nonretroreflective, so they don’t resemble lights at night. This combination prevents confusion with active runway lighting while still being easy to see in daylight. That’s why the correct description is yellow with no retroreflectivity.

When a runway is closed or not in operation, large X marks are placed to clearly indicate it isn’t usable. These Xs are yellow for visibility, and they are nonretroreflective, so they don’t resemble lights at night. This combination prevents confusion with active runway lighting while still being easy to see in daylight. That’s why the correct description is yellow with no retroreflectivity.

More practice questions