What measurement does RVR provide for pilots?

Runway Visual Range (RVR) is a critical measurement that indicates the distance a pilot can clearly see down the runway. It is primarily used during low visibility conditions, such as fog or heavy rain, to determine if it is safe for an aircraft to take off or land based on the visibility limits. RVR is particularly important because it directly affects a pilot's decision-making regarding approach and landings, especially in instrument meteorological conditions (IMC).

The primary purpose of RVR is to ensure that pilots have sufficient visibility to safely navigate the approach and landing phases of flight. By providing this specific distance measurement, RVR supports pilots in understanding the operational limits of their aircraft in relation to current weather conditions.

This makes it vital for safe flight operations, especially at airports with varying visibility conditions. By understanding RVR, pilots can make more informed decisions regarding their landing and takeoff procedures, ultimately enhancing safety during flight operations.