That type of weather really throws the program off down in that region. I remember being down in Florida during a light freeze.
I was at DFW during an ice storm it was like bumper cars on the road. One of the wildest things I have ever seen. People not even remotely aware of the effects of the ice on the road surface.
If it's slick I would not be on the road with those folks.
It's 10F here right now which is balmy. We could see -10, -15 Sunday night.
at -30F below things slow down here. I have had family from Arizona start freaking at 0 F and fly home like the end of the world was coming.
Be safe