Rain stops Friday around 3-4 pm. Temps will still be above freezing. Then the temp plummets and they will be out in full force treating the roads. They can’t pretreat because the rain will wash it all away.

By the time dawn on Saturday rolls around, the roads will be perfectly fine. It’s just gonna be really freakin’ cold and traffic is going to be abysmal. The roads being icy will be a non-issue