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先进的汽车及公路设施作为现代社会的主要标志之一,在世界各国的经济建设、社会活动中发挥着极为重要的作用。随着社会发展的需要,现代化的汽车生产线将大量的汽车源源不断地推向市场,进入有限的道路空间。由此造成了另外一个人们必须面对的现实,就是交通拥挤,交通事故及由此引发的交通阻塞。即便是在高速公路总长度居世界首位的国家——美国,交通阻塞及由此造成的人力、物力浪
As one of the main symbols of modern society, advanced automobile and highway facilities play an extremely important role in the economic construction and social activities of all countries in the world. With the needs of social development, modern automobile production line will be a large number of cars a steady stream of market, into the limited road space. As a result, the other reality people have to face is traffic congestion, traffic accidents and the resulting traffic congestion. Even in the United States, where the total length of the highway ranks first in the world, traffic congestion and the resulting manpower and material resources