Quote Originally Posted by SubaruNorway View Post
This is why.
https://images.app.goo.gl/mdTF5a6DPV6wfRMU6
Quote Originally Posted by BleAivano View Post
What happens when the frozen roads start defrost is that the top layer becomes very saturated with water so the road becomes very very soft, almost like a floating surface.
see this picture below (source). Now imagine 20-30 rally cars + other official vehicles to drive on a road like this. How many cars would be able to pass before they would get stuck?
Then next question would be how you would remove the cars being stuck (as you cannot drive a heavy vehicle on the road)?

So they are not gravel roads. They are just frozen dirt.

That was all in needed to know.