BLACK ICE -- From the weather and news reports. Ice is ice. Watch your step. “Ice is usually clear and shiny when you see the black pavement through it.” Robert Irving, Tahoe City, California
They're a little late to the game. I was first told the term and had it explained when taking car driving lessons way back in 1947 !
It is a dangerous thing and too often found in northern states when roads have been cleared but moisture and freezing temps combine to form that thin sheet of translucent ice on the black macadam. Can't remember ever seeing or experiencing it on concrete roadways. Hmmmmm.