What colors do runway centerline lights exhibit from the point 300 m to the runway end?

The correct answer describes the sequence of colors for runway centerline lights, which are designed to provide guidance to pilots as they approach the runway for landing and as they taxi along the runway. The proper sequence is that from the point 300 meters to the runway end, the colors exhibited by the runway centerline lights are white until reaching the last 300 meters, where they switch to red to indicate a close proximity to the runway threshold.

Beginning with white lights, the runway centerline remains illuminated in white to provide clear guidance to pilots during their landing approach. As the aircraft gets closer to the runway end, the transition to red indicates that the runway is nearing its limits, signaling to the pilots that they are approaching the end of the runway, a critical piece of information for safe landings.

Understanding this color coding is vital for pilots during operations, as it helps them determine their position relative to the runway's available length, enhancing situational awareness and safety. Runway lighting protocols are standardized to ensure consistency across airports, which helps in reducing confusion and improving the overall safety of flight operations.