Plain English Meaning

How far a pilot can see down the runway when sitting at the start of it, measured by equipment near the runway rather than by a person looking outside.

Full Definition

The horizontal distance, measured in feet, that a pilot in the touchdown zone of a runway can see down the runway from the approach end. RVR is determined by instruments positioned alongside the runway and is reported in increments of 100, 200, or 500 feet depending on the value.

Context Anchor

Seen in instrument procedures, weather reports, approach minimums, and air traffic control information when fog, heavy rain, snow, or low clouds reduce near a runway.