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作为国民经济重要部门之一的交通运输业,在整个社会运作机制中起着纽带的作用,它既衔接生产和消费,又促进经济和社会的发展。而客货运量占整个综合运输比例80%以上的公路运输,随着我国公路建设,特别是高速公路的建设和发展更是如虎添翼。现已初步形成以国道为主干线,四通八达、通江达海的公路交通网络体系,公路占有的地位和经济的发展、社会需求密不可分,
As one of the important sectors of the national economy, the transportation industry plays a role as a link in the entire social functioning mechanism. It not only links production and consumption but also promotes economic and social development. However, the road transport with passenger and cargo traffic accounting for more than 80% of the total integrated transport is even more powerful with the construction and development of the highway construction in our country, especially the expressway. An initial road network system consisting mainly of the national road has been formed. The road network occupies a prominent position in the road and the economic development is closely linked with the social needs.