You've heard NBC 5 reporters, weather experts and traffic Tweets use the term -- but what is this "cobblestone ice" plaguing North Texas roads?
Ryan LaFontaine with the Texas Department of Transportation said cobblestone ice is a combination of ice and sand laid down by TxDOT and city trucks.
Traffic compresses the mixture to form a cobblestone-type surface with a thick layer of frozen ruts and potholes.
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The rough service does allow cars and trucks to move over icy roadways, but not without some significant bumps to drivers. The surface tests even the most well-tuned suspensions and could cause damage to vehicles with low clearances.
The solution to the cobblestone conundrum? Scrape it off.
TxDOT said a task force of crews using graders with heavy blades chipped away 70 percent of the so-called cobblestone ice by Monday evening.
Patches of the ice formation were still around Tuesday morning on some highways.