Where is black ice likely to occur on the road?

Black ice is often found in sheltered or shaded areas due to the unique conditions in these locations. When temperatures drop, these areas may not receive direct sunlight for extended periods, preventing the ice from melting. This can lead to the formation of a thin, nearly transparent layer of ice on the road surface, making it particularly dangerous for drivers who may not realize the hazardous conditions until it is too late.

In contrast, sunny days tend to warm the road surface, reducing the likelihood of ice formation. High-speed roads, while they may have ice, are not specifically prone to black ice given that speed does not directly influence where it occurs. Well-lit areas are less likely to have black ice because the presence of light can help to maintain the surface temperature above freezing, especially compared to unlit or shaded areas.