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Black ice is fairly common here from freezing rain, freezing drizzle, freezing mist, and even freezing fog. Most common on bridges and elevated roadways if temp is just below freezing. But also on any surface if temp drops more than a few degrees below freezing.
Sometimes looks wet. Sometimes a little glossy. Sometimes the pavement just looks a little darker than normal. And to make it more difficult is that it may be a mixture of the above with many areas not frozen at all. Then you can get a little over confident thinking the road is fine and suddenly find yourself sliding sideways.
I have driven it periodically all my 60 driving years. But still try to stay off unless absolutely necessary. Once, traffic came to a stop in front of me. When I came to a full stop, my truck hesitated a few seconds and then began sliding sideways onto the shoulder of the road as the pavement sloped very slightly that way. That is slick. And nothing you can do.
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