Which lights signal the remaining distance on a runway?

Runway end lights specifically indicate the end of the runway, providing critical visual guidance for pilots as they approach the runway's termination point. These lights are typically located at the runway's ends and serve as a clear signal to pilots regarding the remaining distance available for landing or takeoff. By illuminating the end of the runway, they help prevent overshooting the runway during landing and assist in ensuring safe operations.

While threshold lights and runway centerline lights provide important visual cues during the approach and landing phases, they do not serve the same purpose of indicating how much runway distance is left. Threshold lights mark the start of the usable runway, and centerline lights assist in maintaining alignment along the runway but do not indicate the overall remaining distance. Touchdown zone lights highlight the ideal landing point but do not inform pilots about the distance remaining to the runway's end. Thus, runway end lights are the specific signals indicating how much runway is left for safe operations.