What defines runway lighting?

Runway lighting is designed to provide visual guidance to pilots during takeoff and landing, especially in low visibility conditions. The correct answer highlights that runway lighting typically features white lights along the edges, which help delineate the runway's dimensions. At the ends of the runway, colored lights are used; specifically, red lights are placed on the threshold of the runway (indicating the end of the runway) and green lights indicate the beginning of the runway. This combination serves both to enhance safety and to clearly mark where the runway starts and ends, aiding pilots in their approach and landings.

Understanding the function of these colors and where they are positioned is crucial for pilots, as it helps them to recognize their landing area and navigate safely. The specific arrangement of colored and white lights at runways is standardized to ensure uniformity across airports, which is essential in maintaining safety in aviation operations.