Black ice意思

"Black ice" is a term used to describe a thin layer of ice that forms on roads, walkways, and other surfaces. It is called "black ice" because it is often transparent or nearly transparent, allowing the surface beneath to show through, giving it a black appearance. This type of ice is particularly dangerous because it is often difficult to see and can cause vehicles to slide or lose control. It is also very slick and can be more dangerous to walk on than thicker layers of ice. Black ice is most commonly found on roads and sidewalks that are shaded or that have a slight incline, as these areas tend to freeze first when temperatures drop.