What color of lights indicates the last 3000 feet of a runway?

The color of lights that indicates the last 3000 feet of a runway is a combination of red and white lights. These lights are part of the visual approach slope indicator systems, which help pilots identify their position in relation to the runway during landing.

Specifically, the last 3000 feet of the runway is marked by red and white lights to signal that the aircraft is nearing the end of the runway and should be prepared for landing. The red lights indicate the area that is closer to the threshold, while the white lights typically signify sections of the runway that are further away. This combination provides essential visual cues for pilots to ensure they are approaching the runway at the correct altitude and distance for a safe landing.

Flashing red lights, by contrast, are typically used to indicate caution areas, and white lights alone represent runway sections but do not provide the specific indication for the last 3000 feet where both red and white lights are crucial for situational awareness during the landing phase.