Pull over to the side of the road if you have no visibility. If it gets too difficult or thick, pull over and wait. Turning on your hazard lights alerts other drivers of where you are.
Use the right edge of the road as a guide. This can help you avoid running into oncoming traffic or being blinded by oncoming headlights.
Ask for help. Don't be afraid to ask your passengers to help keep an eye out for oncoming cars and obstacles on the road.