Originally Posted by
cyccommute
I did. All I get is something that has all the hallmarks of an urban legend.
Wait... WHAT!?!? Troll much??
At low temperatures (below –18 °C), black ice can form on roadways when the moisture from automobile exhaust condenses on the road surface.[SUP]
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Such conditions caused multiple accidents in Minnesota when the temperatures dipped below –18 °C for a prolonged period of time in mid-December 2008.[SUP]
[5][/SUP]
Salt's ineffectiveness at melting ice at these temperatures compounds the problem.
Black ice - Wikipedia, the free encyclopedia