In the context of runway markings, what does a displaced threshold accomplish?

• A. It shortens the distance available for landing.
• B. It lengthens the distance available for landing.
• C. It has no impact on landing distance.
• D. It only affects takeoffs.

Answer: (A)

A displaced threshold moves the landing start point forward, so the portion of runway before the displaced threshold cannot be used for landing. That means the distance available to land is shortened by the displaced amount. The area ahead of the displaced threshold can still be used for takeoff runs or for rollout when landing from the opposite direction, but it cannot be used for landing in the direction of the displaced threshold.