Which condition matches the wet runway definition used here?

• A. Shiny appearance with less than 1/8 inch water covering 100% of runway
• B. Wet patches with standing water only
• C. Dry pavement with oil residue
• D. Snow-covered runway

Answer: (A)

A wet runway is defined by a uniform film of water across the entire surface, giving a shiny appearance, with the water depth less than 1/8 of an inch. This full-coverage, shallow water film changes how the tires interact with the pavement and increases stopping distance and hydroplaning risk, so recognizing the shiny, evenly wet surface is the key cue. The other scenarios don’t fit: wet patches with standing water aren’t fully covered, so they’re not the defined wet condition; dry pavement with oil residue isn’t water-related and behaves differently; snow-covered turf isn’t a water film at all.