Originally Posted by sorebutt
It is warning you of possible ice. A road can have black ice at that temp. The closes I have ever come to crashing was at 40 degrees when I hit black ice with water on top. It was a shady area that never saw sun in the winter. It was 40 degress for several hours. That was enought to melt the top layer of ice, but the pavement and lower ice was still below freezing.
In other words, the blinking is just another idiot light that if relied upon could get you killed.