改善城市交通状况,减少交通拥挤和交通事故,无论对工业发达国家还是发展中国家,都已成为当务之急。近二十多年来,西方工业发达国家为改善城市交通状况所采取的主要措施是:1.大力兴建现代化道路,改造旧街道。改建工作在六十年代达到了高潮,一些大城市建筑了多层架空高速道路和不 Improving urban traffic conditions, reducing traffic congestion and traffic accidents have become a top priority for industrialized and developing countries alike. In the past two decades or so, the main measures taken by western industrialized countries to improve urban traffic are: 1. Vigorously build a modern road and transform the old streets. Reconstruction work culminated in the sixties, some large cities built a multi-storey overhead highway and not