Two-trackin' is when there is enough snow on the road that you have to follow the two tracks left by traffic ahead of you because you can't see the rest of the road. This works okay when everyone behaves themselves, does right about the same speed and doesn't follow too close.
However, when someone is impatient and has to pass everyone else, the blowback from his or her trailer is blinding. Conversely, if someone is going much slower than everyone else, everyone else is forced to pass on the slippery, snow-covered passing lane.
Suggestions for trucks: keep your distance, don't get in a hurry and for Goodness sake, stay off the bumper of that knucklehead four-wheeler in front of you! If everyone seems to be passing you, pull it off the road. If you are that nervous, you are dangerous to yourself and everyone around you. No load is worth someone's life.
Suggestions for cars: Don't try to pass the trucks. Trucks weigh about 20 times what cars do and have 18 large tires on the ground in comparison with the tiny little four you have. As a result, big trucks are much more stable in ice and snow and less likely to break loose. If all the trucks seem to be doing a certain speed in this stuff, fall in behind and let the truck clear the way for you. Just please don't follow too close. In snow, eight car lengths is a good distance.
Also, at night in these conditions, keep in mind our headlights are much more powerful and since we sit up higher, we can see conditions and incidents before you can. Again, falling in behind is safest. In general, we will not do anything to put ourselves or others in danger. (Yes, there are exceptions, but I'm not speaking to that right now.) When following a truck at night, please try not to weave back and forth in the lane, sending your headlights first into one mirror then into the other. It's very distracting, and when we're in these conditions, the more attention we can pay to the road, the safer everyone will be.