What color are standard runway lights for the last 2,000 feet of runway?

Standard runway lights for the last 2,000 feet of a runway are red. This color designation is crucial as it serves as a visual cue for pilots indicating that they are approaching the end of the runway. The red lights help pilots in maintaining situational awareness, especially during landing and takeoff phases, ensuring they are alert to the limited remaining runway length.

The use of red lights in this context is standardized across many aviation regulations, making it a universally recognized signal. This helps in enhancing safety by clearly marking the "runway end" area, thereby reducing the risk of runway excursions or accidents associated with insufficient runway length.

Blue lights, on the other hand, typically outline the sides of the runway, while white lights are used for the rest of the runway length and approach lights. Yellow lights often indicate taxiway boundaries or are used in other aviation contexts, but they do not mark the last portion of the runway. Thus, red lights are specifically designated for the final segment of the runway to signal that pilots are nearing the end.