TractorChina
1. Tractor
A tractor is a motor vehicle designed primarily to provide pulling power for agricultural, forestry or similar work. Tractors can tow trailers and machinery and may also carry or operate equipment used for tasks such as cultivating land, harvesting or maintaining forests.
Tractors often travel more slowly and are larger or wider than ordinary passenger vehicles, so other road users should allow sufficient space and take particular care when overtaking or meeting them on narrow roads.
Why should drivers take care around tractors?
Tractors may be slow-moving, wide or accompanied by large machinery or trailers. Drivers should leave sufficient space and overtake only when there is enough visibility and room to do so safely.

Traffic rules
China