What do yellow runway edge lights indicate?

Yellow runway edge lights indicate a specific distance remaining on the runway, which is crucial information for pilots during landing and takeoff maneuvers. When a pilot sees yellow lights, it signifies that there are 2000 feet of runway remaining, allowing them to assess their landing or takeoff performance and decide whether it is safe to proceed.

This visual cue is vital, particularly in low visibility conditions, aiding pilots in making informed decisions while managing their approach to the runway. It directly enhances situational awareness, ensuring that pilots can react appropriately as they approach the end of the available runway.