What is the maximum spacing between closed taxiway markings?

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Multiple Choice

What is the maximum spacing between closed taxiway markings?

Closed taxiway areas are marked with X markings across the surface to signal that the portion isn’t usable. Placing these markings at regular intervals ensures pilots will see the closure no matter where they are approaching from, which helps prevent entering a closed taxiway. The maximum spacing of 100 feet strikes a balance between visibility and practicality. If the markings were spaced farther apart, a pilot could miss a closure, especially in poor lighting or weather. If they were closer together, it would be more frequent and costly to maintain without providing additional safety benefit. Among the given options, 100 feet is the standard that reliably communicates the closure while remaining reasonable to implement.

Closed taxiway areas are marked with X markings across the surface to signal that the portion isn’t usable. Placing these markings at regular intervals ensures pilots will see the closure no matter where they are approaching from, which helps prevent entering a closed taxiway.

The maximum spacing of 100 feet strikes a balance between visibility and practicality. If the markings were spaced farther apart, a pilot could miss a closure, especially in poor lighting or weather. If they were closer together, it would be more frequent and costly to maintain without providing additional safety benefit. Among the given options, 100 feet is the standard that reliably communicates the closure while remaining reasonable to implement.

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