In the context of aviation, what does RVR stand for?

RVR stands for Runway Visual Range, which is a crucial measurement in aviation that indicates the distance a pilot can see down the runway. This measurement is especially important in conditions of reduced visibility, such as fog, rain, or snow. RVR helps pilots determine whether it's safe to land and take off under certain weather conditions, informing decisions about instrument approaches.

Runway Visual Range is typically reported in feet or meters and is determined from visibility measurements taken from specified locations along the runway. As a standardized measure, it plays a critical role in aviation safety and operational planning by providing a clear understanding of visibility conditions at the runway.