In the last 24 hours Sussex police have attended more than 300 collisions across the county.
No-one suffered any life threatening injuries.
Chief Inspector Phil Nicholas from the Road Policing Unit said: “The conditions meant there was a significant demand on our resources last night and we were stretched to capacity.
“Today is going to be about helping recover vehicles as many people fell asleep in their cars or abandoned them so even when the roads did become clearer they were still blocked by many vehicles.
“We will be assisting the Highways and other partner agencies to recover these vehicles. Although the conditions have inproved slightly, we are asking people to not make any journeys unless they are essential.”