大城市的交通问题是一个世界性的难题，发达国家如此，发展中国家更是如此。世界上几乎没有一个大城市不为交通拥挤、堵塞所困扰。我国是发展中国家，道路交通方面积累的问题更多。道路狭窄、人车不分、快慢车道不分，加上人们交通法制观念淡薄，自我保护意识缺乏等，限制了机 The traffic problems in big cities are a worldwide problem, especially in developed countries and developing countries. Almost no major city in the world is not bothered by congestion or congestion. China is a developing country, and there are more problems accumulated in road traffic. Narrow road, regardless of people and vehicles, speed lanes regardless of traffic, coupled with the concept of traffic light people weak, lack of self-protection, etc., limiting the machine