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With the development of highway, traffic increases, the corresponding highway traffic congestion, traffic safety and environmental pollution problems have gradually manifested. On the current operational status of the highway perspective, there have been many new problems to be solved, including the majority of highway traffic attenuation; highway system, the lack of scientific management; variety of different types of vehicles traveling at different speed mixing traffic capacity causes instability and decline; transport some large individual sections of freeway congestion occurs, while other sections are still large room for other traffic capacity, resulting in the construction of the entire highway network without congestion or perennial status. In response to these problems, the urgent need to establish a set of operating conditions and adapt our highways comprehensive analysis of scientific analysis and evaluation method for highway operation and management departments to provide analysis, management, decision-making methods and basis to improve highway operation and management level, thus improving service levels and operational quality highways, expressways full benefits. This paper combines the status of highway from Dynamic Comprehensive Evaluation of operating conditions, traffic incident detection two aspects of the highway network health evaluation and analysis of important issues were studied. 1 Dynamic Comprehensive Evaluation of operating conditions. First run on the current situation of highway traffic to analyze, build high-speed road network health evaluation system, and analyze the functional relationship between indicators, selection of sections saturation, spatial average speed, travel time share, the average headway 4 operational status indicators as a traffic evaluation. Then, in the analysis of existing evaluation methods based on the proposed highway operating conditions suitable for a dynamic evaluation method. The method uses state classification, two-step evaluation methods trend evaluation, the time sequence of dynamic comprehensive evaluation method is applied to the road network running condition trend evaluation. Finally, a case study, the results show that the method can obtain more accurate classification and run running trend analysis, network operating conditions for dynamic real-time evaluation. 2 Automatic Incident Detection. In analyzing traffic incident detection algorithm based on the classic on DS-ANN algorithm for in-depth study. First, the existing traffic detection algorithm automatically classifies classic automatic detection algorithms, and proposes a new algorithm for DS-ANN algorithms, image processing methods. Then, the proposed detection algorithm evaluation: detection rate, false alarm rate, the average detection time three indicators; application on the detection algorithm, effectiveness analysis, the DS-ANN algorithm superiority. Through this study found that for the operating conditions of the Highway Traffic universal status, the use of DS-ANN algorithm combined with image processing method can improve the accuracy of test results, has a certain practical significance.
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