Highway is the aorta in China transport network of highway, it takes a large volume of traffic transportation, which requires the pavement to have a good long-term performance.
高速公路是我国公路运输网络的主动脉，承担了大交通量的运输任务，这就要求我国路面必须具有良好的长期性能。
Convenient transportation: Changjiang river, highway, transport river, railway, seaport and airport which are the most developed area in all China.
交通发达：长江、高速公路、运河、铁路、港口、机场等是全中国的最发达地区。
Has been formed to railway, highway-based, air transportation network as a supplement, and even in North China to become an important national transportation hub.
目前已形成以铁路、公路为主，航空为辅的交通运输网络，成为华北乃至全国的重要交通枢纽。
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