Yun Ke Road is a restricted area, but Guangzhou is not restricted and can be opened during the Canton Fair.

Vehicle restriction is a road traffic policy. Once implemented, it will be implemented for a long time and will not be adjusted basically. There are two kinds of vehicle restrictions. One is the road restriction regulation, which is valid only in designated road sections, and there is no restriction outside this road section. For example, according to Beijing regulations, all kinds of motor vehicles are prohibited in Wangfujing Pedestrian Street, and this restriction order is only valid in Wangfujing Pedestrian Street. In another case, it is valid for a certain range of vehicles in a certain area. For example, Beijing stipulates that non-Beijing A-brand motorcycles are prohibited from driving on the roads within the Fourth Ring Road.