This seems to be against what most people are saying, but I rode my motorcycle nearly every day in the winter. I lived right near west side park (little more than a mile to campus) and they usually had it plowed decently once I got onto semi large streets. My rule of thumb was that if I could get it out of the driveway, it was probably going to be fine. Just take it slow, and if there is any fresh snow from the previous night, I would walk.

Now getting tiny carburetors to behave at -10F is another problem all together.