What are the colors of the runway centerline lights from 900 m to 300 m from the runway end?

The correct answer is that the colors of the runway centerline lights from 900 meters to 300 meters from the runway end are white.

Runway centerline lights are designed to provide visual guidance to pilots during approach, particularly under low visibility conditions. The standard practice for these lights is to maintain a white color as they help pilots identify the centerline of the runway clearly while they are descending towards it for landing.

This white lighting system serves an essential function in enhancing safety by helping pilots accurately maintain their approach path. The transition to other colors typically occurs closer to the runway threshold, where specific colors indicate different aspects of the landing and approach process, such as marking the final approach area or signaling runway boundaries.

Understanding this setup is critical for pilots during landing operations, and the clarity provided by the white lights is significant in reducing the chance of misalignment during one of the most critical phases of flight.