Commercial Driver's License

Answer: E - Commercial drivers should know how to identify potentially slippery roadways. Some of the most common signs to be aware of include melting ice on roadways, bridges (which ice up faster than surface roads), vehicle icing, and shaded areas. If your vehicle is icing up, chances are good the roadway is doing so as well. Shaded areas will often take longer to de-ice than sunlit areas and pose a greater danger of icing.