Which lights signal the end of a runway before landing?

Runway threshold lights are specifically designed to mark the beginning of the runway for landing aircraft. These lights indicate to pilots where the usable area of the runway starts, typically positioned at the threshold itself. They help in guiding pilots during landing, especially during low visibility conditions. The presence of these lights signals a safe and proper landing area, emphasizing the importance of precise positioning as aircraft descend towards the runway.

In contrast, runway edge lights delineate the edges of the runway but do not denote the specific landing threshold. Taxiway lead-on lights assist in guiding aircraft from taxiways onto runways, while runway centerline lights help maintain alignment along the center of the runway during the landing and takeoff phases. Therefore, runway threshold lights play a crucial role in signaling the end of a runway in a landing context.