In winter, even on clear days without snow, a thin transparent layer of ice can form on bridges, at tunnel entrances and exits, and on shaded roads, looking like an ordinary wet road. What is it called?
💡 Hint
The key to winter road hazards is whether you can actually see them. Match each option to what it relates to—wet roads, brakes, tires, or ice—and also think about why bridges and shaded spots freeze before other places.
Answer: ②
Explanation
Black ice is moisture or melted snow that has frozen into a thin layer; it is so clear that the dark asphalt shows through and drivers hardly notice it. In winter, slow down before reaching bridges, tunnel entrances and exits, and shaded spots. Aquaplaning is tyres riding on water in the rain, while vapor lock and standing waves relate to the brakes and tyres respectively.
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