RVR is horizontal visual range, not slant visual range. It is based on the measurement of a transmissometer made near the touchdown point of the instrument runway and is reported in hundreds of feet.

Runway visual range South

Runway Visual Range as measured in the touchdown zone area

Abbreviation for: runway visual range Fr: RVR

Runway Visual Range. The horizontal distance a pilot can see down the runway from the approach end; based on the sighting of either high intensity runway lights or the visual contrast of other targets, whichever yields the greater visual range.

runway visual range, a horizontal measurement of visibility along a runway.

Runway Visual Range. An instrumentally-derived value, based on standard calibrations, that represents the horizontal distance a pilot may see down the runway from the approach end.

RUNWAY VISUAL RANGE. It is the maximum distance at which the runway, or the specified lights or markers delineating it, can be seen from a position above a specified point on its center line. This value is normally determined by visibility sensors located alongside and higher than the center line of the runway. RVR is calculated from visibility, ambient light level, and runway light intensity. Absolute humidity..., Backing..., Calm..., Daily mean..., Earthlight..., Fahrenheit temperature scale..., Gale..., Haboob..., Ice..., Jet streak..., Katabatic wind..., Lake effect snow..., Mackerel sky..., Nadir..., Obscuration..., Palmer drought index..., Quantitative precipitation forecast..., Radar..., Saffir..., Teleconnections..., Ultraviolet..., Valley breeze..., Walker circulation..., X-rays..., Year..., Zodiac....