[Richard230]

Here is a link to a useful and scary article by Bike Bandit regarding the dangers of "black ice" and how to detect it. The blog includes a scary video showing nothing but cars skidding on ice, which is not all that helpful, unless you like to see cars skidding and spinning on ice.   
http://www.bikebandit.com/blog/post/black-ice-the-invisible-winter-threat

[mrunderhill1975a]

I learned about ice while using a bike on my paper route when I was 14.  Slight drizzle at 6:00 am, no ice, all seemed well......... 6:15 am temp dropped to freezing, at 6:16 I was sliding on my back in a puddle of ice cold water, bike and papers were sliding down the hill.
Lesson learned, have a thermometer on board, if raining and temp is 35 degrees F, it is time to start walking.

[dginfw]

In this part of North Texas, we see ice on the roads a few times each winter. In the daytime, temps are usually get above freezing so any precipitation is just cold rain...but as soon as the night rolls in and temps drop, those patches of moisture on the ground become ice. There's always some dipshit in a big pickup truck who thinks they "know how to drive" that slides off the road because they don't realize that ITS ICE. Kinda hard to maintain control when you get ZERO traction