Not only is black ice a danger for pedestrians, but black ice is also one of the leading causes of automotive deaths in the world. It’s always best to drive slowly and carefully in sub-freezing temperatures, and always be on the lookout for shiny surfaces in your headlights.
Water with Gray or White Ice
It’s a good rule of thumb to just never run out on ice unless you see other people successfully frolicking on it. Generally, smart people only step on clear or blue ice that forms over a long period of time in areas that have sub-freezing temperatures. If you do see someone attempting to walk on gray or clear ice, stop them immediately.