Black ice is a very thin layer of ice that accumulates on pavement that is below 32 degrees Fahrenheit, which is below freezing. This means that any snow melt that did occur on roadways froze back over, which could've led to slick spots on your morning commute. Once the sun sets, this snow melt can re-freeze and become black ice in a short amount of time. There are a couple of ways to stay safe when driving if you potentially run into this black ice. First, reducing speed if you suspect black ice may be present will help lessen the likelihood of losing traction.