What aids in the visibility for landing under adverse conditions?

Runway Centerline Lights are crucial for aiding visibility during landings, especially in adverse conditions such as low visibility, rain, or fog. These lights are installed along the centerline of the runway and provide a visual guide for pilots, indicating the ideal landing path. The continuous illumination of these lights helps pilots maintain alignment with the runway, which is particularly important when they may not be able to rely solely on visual references due to poor weather conditions.

While runway end identifiers and approach lights do provide guidance, they primarily mark the end of the runway or assist with the initial approach phase respectively. PAPI lights, which indicate the glide slope, are also beneficial but do not assist as directly in maintaining runway centerline alignment during the actual landing phase. Therefore, Runway Centerline Lights are specifically designed to enhance visibility and provide critical alignment during landing under a variety of adverse conditions.