If a runway is less than 200 ft wide the overall width of the threshold markings shall be __ ft less than the runway width.

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Multiple Choice

If a runway is less than 200 ft wide the overall width of the threshold markings shall be __ ft less than the runway width.

The concept being tested is how threshold markings are sized relative to runway width. For runways narrower than 200 feet, the threshold markings are made to be 20 feet smaller in overall width than the runway itself. This creates about 10 feet of edge clearance on each side, keeping the markings well within the usable pavement and avoiding extensions right up to the edge. That exact 20-foot difference is the standard fit for these narrower runways. If you tried a smaller or larger subtraction, you’d misalign with the established sizing and edge margins.

The concept being tested is how threshold markings are sized relative to runway width. For runways narrower than 200 feet, the threshold markings are made to be 20 feet smaller in overall width than the runway itself. This creates about 10 feet of edge clearance on each side, keeping the markings well within the usable pavement and avoiding extensions right up to the edge. That exact 20-foot difference is the standard fit for these narrower runways. If you tried a smaller or larger subtraction, you’d misalign with the established sizing and edge margins.

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