My brother was already out on another one here and called to tell me I couldn't get through the way he did. Lets say it was more then fun backing in 3 miles. More then once I had to stop to make sure which postes to go between. I went to lead the driver out and he disappeared. A few minutes later the Highway Patrol stopped with me to tell me the truck was in the ditch. Ended up the driver had his wipers freeze up from all the snow. He set his cruise control and stepped on the step of the truck to knock the ice from the wipers. The truck drove off the road with him on the step. He had to wait for a few hours for us to get him out again.