What are the road conditions in winter (December to March) and what should I be careful of when driving on snowy roads?

Even if there is snow, national and prefectural roads are cleared in the morning, but there are some areas that become icy in the shade, early morning, and evening. Winter gear such as studless tires is essential. The areas around Lake Tazawa and Nyuto Onsen are particularly high in altitude, so please be sure to take all necessary precautions against snow.