Weifang trucks are not allowed to travel, and they are restricted all day on weekdays and weekends. According to official website, a traffic policeman from Weifang, in order to further standardize the traffic order of freight vehicles in Xiashan Eco-economic Development Zone, prevent and reduce major road traffic accidents, and ensure orderly, safe and smooth road traffic, according to the Law of the People's Republic of China on Road Traffic Safety and other relevant laws and regulations, the Regulations on the Implementation of the Law of the People's Republic of China on Road Traffic Safety and the Regulations on the Safety Management of Hazardous Chemicals, combined with the actual road traffic management in the jurisdiction, a decision was made on Xiashan Eco-economic Development Zone through research.