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Shanghai and Shanghai -Jiading Expressway opened to traffic in 1988 , to achieve a breakthrough in China 's mainland highway zero . The rapid development of highway in 15 years, driven by the rapid economic development in China , the end of 2003, the traffic mileage of 30,000 kilometers , ranking second in the world . Chongqing section of the Chengdu-Chongqing Expressway , as with our other highway not only faces competition in the traffic channel between the two places , but also extend the time with the opening of the highway pavement various diseases increasingly apparent . How to get more traffic in the competition in the multi-channel flow , how to evaluate and maintain the good performance of highway pavement , and how to ensure a safe and smooth road maintenance , to maximize economic and social benefits of the highway , to improve the high-speed the scientific decision-making level of the highway custody units has become a top priority of the Chengdu-Chongqing Expressway in Chongqing segment . Conservation Strategies in Chongqing section of the Chengdu-Chongqing Expressway other highway due to the similarities of the highway , there are considerable reference . This paper briefly describes the development and conservation of the status quo of China 's highway , and at the same time presents and analyzes the basic situation of the Chengdu-Chongqing expressway , and management science , management, economics , probability theory and mathematical statistics , engineering economics , operations research , fuzzy math other tools focus on the Chengdu-Chongqing Expressway Chongqing section of the conservation strategy under competition and technological conditions , analyzes the traffic flow characteristics of road congestion in the curing conditions , ideas and methods of vehicle control .
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