Definition
Runway remaining lights are a system of runway edge lights that change color in the final portion of the runway to indicate to pilots how much usable runway length is left ahead of them. Typically, the edge lights appear white for most of the runway, change to alternating white and amber over the second-to-last 3,000 feet, and become solid amber over the final 2,000 feet, giving a clear visual cue of remaining distance during landing rollout or takeoff.
Plain English
Lights along the side of the runway that change color near the end so pilots can quickly see how much runway they still have in front of them.
Context Anchor
Seen in airport lighting descriptions and NOTAMs, especially when a lighting system is out of service or not operating normally.
Why Pilots Care
These lights give pilots an immediate visual cue of remaining runway distance, helping prevent overruns and supporting safe go/no-go decisions.
Intuition Check
Do not read this as just any lights that happen to be on a runway. In this context, runway remaining lights specifically help show how much runway is still ahead.
Example Sentence 1
As the edge lights changed to alternating white and amber, the captain noted that the runway remaining lights were showing roughly 3,000 feet left.
Example Sentence 2
After touchdown the crew used the changing runway remaining lights to judge stopping distance in low visibility.