What color are runway threshold lights?

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Multiple Choice

What color are runway threshold lights?

Explanation:
Runway threshold lights are green because they mark the beginning of the usable landing portion of the runway and give pilots a clear, positive cue to land beyond that point. The green color stands out and signals “go ahead” from the approach direction, helping with visibility in low-light or poor weather. If you were viewing them from the opposite direction, they would appear red, indicating the threshold is behind you and not the landing point. For context, runway edge lights run along the sides of the runway and are white, turning red toward the far end to show you’re approaching the end of the usable runway.

Runway threshold lights are green because they mark the beginning of the usable landing portion of the runway and give pilots a clear, positive cue to land beyond that point. The green color stands out and signals “go ahead” from the approach direction, helping with visibility in low-light or poor weather. If you were viewing them from the opposite direction, they would appear red, indicating the threshold is behind you and not the landing point. For context, runway edge lights run along the sides of the runway and are white, turning red toward the far end to show you’re approaching the end of the usable runway.

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