Runway Visual Range (RVR) is calculated from which of the following factors?

Runway Visual Range (RVR) is a critical metric used in aviation to determine the distance over which a pilot can see the runway surface markings or lights. It is influenced by several environmental and operational factors.

Visibility is a key component as it directly impacts how far a pilot can see. In circumstances of reduced visibility, such as fog or heavy precipitation, the RVR will be less than the actual visibility measured.

Ambient light level also plays an essential role since RVR is often measured at night or in poor weather conditions. The amount of ambient light affects the visibility of runway markings and lights, which are crucial for a safe landing approach.

Lastly, runway light intensity is another significant factor. The brightness and effectiveness of the runway lights can enhance visibility, especially in adverse weather conditions or at night. Runway light intensity varies based on the type and configuration of the lighting used at an airport.

Therefore, since RVR is derived from the interplay of visibility, ambient light levels, and runway light intensity, the choice encompassing all these factors is indeed correct.