In the use of snow chains, pay attention to the following aspects: install the snow chains before traveling, not after encountering icy and snowy roads, because the installation of snow chains in temporary parking is more troublesome than installing in advance, and it is not conducive to safety. Park the vehicle in a safe area before installation and removal. If you are on a busy road, you need to set up necessary traffic warning signs. Do not install snow chains with flat tires. There are also size restrictions on snow chains, which are suitable for different wheel sizes and tire widths. Pay attention to choosing snow chains that match the wheel size. After installing the snow chain, the driving speed should not exceed 40Km/hour, and avoid sudden acceleration or deceleration as much as possible. When the vehicle enters the road without snow chains, please remove the snow chains in time. Snow chains are not designed for trailers and tractors. In cold regions, some car owners make their own snow chains, although this can temporarily solve the problem, but it is not worth promoting.