Runway Visual Range (RVR) is one of the most important visibility measurements in aviation, especially during low-visibility operations. It plays a critical role in determining whether an aircraft can take off, land, or continue an instrument approach safely. Pilots, air traffic controllers, and airline operators rely on RVR to ensure compliance with ICAO, FAA, and DGCA regulations and to maintain flight safety during fog, rain, snow, or haze. Runway Visual Range What Is Runway Visual Range (RVR)? Runway Visual Range (RVR) is the distance over which a pilot on the runway centerline can see runway markings or runway lights, expressed in meters or feet. Unlike general meteorological visibility, RVR specifically measures what a pilot can actually see on the runway, making it more accurate and operationally relevant. ICAO Definition of RVR According to ICAO: Runway Visual Range is the range over which the pilot of an aircraft on the centerline of a runway can see the runway surface m...