What color and type of lights indicate the touchdown zone?

The touchdown zone is critical for pilots during the landing phase, and the use of steady white lights serves as a clear visual guide. These lights are positioned to outline the area where the aircraft is intended to touch down on the runway. Steady white lights signify the preferred landing spot and help ensure that pilots align their approach correctly, especially in low visibility conditions.

This type of lighting is used to provide clarity and focus for the pilot as they descend towards the runway, making it essential for a safe landing. The consistent brightness of the white lights is distinguishable against the background during both day and night, further aiding pilots in their approach.

The other color options, such as steady red lights, generally indicate a warning or to signify hazards, while flashing white or solid yellow lights may serve different purposes related to runway or taxiway usage or other operational signals. Thus, steady white lights specifically signify the touchdown zone, making that choice appropriate for the context of the question.