Car Wheels Make Crazy Patterns on Cold Mornings?

What is this sign really telling us?
What should drivers do if they see this sign?

Daniel:

Hi I am a safety talking sign. My job is to tell you water makes the road slippery and ice makes it more slippery and remember to slow down. Thank you.

Eleanor:

Hello I'm a talking sign. I tell you not to go fast because you may slip over the road in your car. Thank you.

Tim:

Hello I am a talking sign. I tell you the road is slippery so watch out!

Cory:

HelloI am a talking sign and my job is to tell you to not go fast or you might crash. The road might be slippery and you might crash into a truck.