What environment is most susceptible to freezing conditions on roads?

Bridges are particularly susceptible to freezing conditions on roads because they are exposed to air on both the top and bottom surfaces. This exposure allows heat to escape more quickly compared to other road surfaces that are primarily insulated by the ground beneath them. As a result, bridges tend to cool down and freeze faster than regular roadways, making them a hazardous area for drivers during cold weather.

In contrast, highway intersections, straight highways, and roundabouts may retain heat from the ground, especially when they have more traffic and are less exposed to the elements. Therefore, while these areas can also experience freezing temperatures, bridges are the most at risk due to their unique structural characteristics.