Final answer:
Roads are likely to be especially slick when it's raining heavily, there is freezing rain or sleet, there are leaves or debris on the road, the temperature is near or below freezing, oil or other fluids have recently spilled on the road, there is black ice, the road is newly paved or resurfaced.
Step-by-step explanation:
Roads are likely to be especially slick when:
- It's raining heavily: When the rain is heavy, the water can quickly accumulate on the surface of the road, creating a layer of water that reduces the friction between the tires and the road.
- There is freezing rain or sleet: Freezing rain or sleet creates a layer of ice on the road surface, making it extremely slippery.
- There are leaves or debris on the road: Leaves and debris can make the road surface more slippery, especially when they are wet or have been compacted by other vehicles.
- The temperature is near or below freezing: When the temperature is near or below freezing, any moisture on the road can freeze, creating icy and slick conditions.
- Oil or other fluids have recently spilled on the road: Spilled oil or other fluids can create a slippery surface on the road.
- There is black ice, which is difficult to see: Black ice is a thin layer of clear ice that forms on the road and is difficult to see, making it highly dangerous.
- The road is newly paved or resurfaced: Newly paved or resurfaced roads can have a smoother surface, which reduces traction.
- There is a layer of frost or dew on the road surface: Frost or dew can freeze on the road surface, creating icy conditions.
- Snow is melting and refreezing, creating icy patches: When snow melts and then refreezes, it can create patches of ice on the road.
- There is reduced visibility due to fog or mist: Reduced visibility due to fog or mist can make it difficult to see the road conditions, including ice or water on the road.
- It's during the initial stages of rainfall after a dry period: During the initial stages of rainfall after a dry period, the rainwater can mix with the accumulated oil and dirt on the road surface, making it extremely slippery.