How about a high-speed traffic policeman's salary of 3000 a month?

Low. According to Yizheng Talent Network, the average salary of high-speed traffic police in China is 6604 yuan, so the salary of high-speed traffic police is 3000 yuan a month. High-speed traffic police is a traffic police department under the Ministry of Public Security of China, which is responsible for managing and maintaining the safety and order of road traffic.