Study On Core Technologies Of Static Highway Operation Safety Management System

During the rapid development of highway construction in China, the highway density is enhanced continuously and highway network is established gradually. Unfortunately the serious problems about traffic safety occurred in the operation of highway put into use mainly because of degraded management measure, imperfect management system and low management level. Therefore it is urgent to establish an operation safety management system based on advanced information, safety and management technology for enhancing highway operation safety.The paper, which studies the core technology of static highway operation safety management system, originates from the projects of guideline for highway safety management technology and Hu-rongxi freeway operation safety management countermeasures. From the angle of static management, the frame of static highway operation safety management system was established and the core technology of the system was studied deeply, including the information collection and processing technology, the highway operation safety evaluation and prediction technology in the different period, and decision-making technology for the project-level and the network-level highway operation safety management.On the research of information collection and processing technology, the information requirement and information resources was analyzed briefly and the information processing technology was studied deeply. According to highway grade, construction character and alignment, highway network was divided into different type of segments and the static character of each type of segment was expressed with the static information. As for the dynamic information, the discrete information and the continuous information were processed in different ways and the expression method for the dynamic character of segments was studied.Based on the analysis of the inner nature and the outer expression of the highway operation safety, the highway operation safety status was defined. According to the request of static highway operation safety management, considering both pre-accident and post-accident evaluation, the highway operation safety evaluation index system and the corresponding evaluation models have been established by analyzing the intrinsic relation among accident data, traffic flow characteristics, highway facility characteristics and highway operation safety conditions. What's more, the operation safety status identification method has been put forward based on quantitative safety evaluation.According to the need of decision-making in the project-level and network-level highway operation safety management, the certain prediction model and the probability prediction model were studied. The time-sequence prediction model was chosen for making certain prediction, and the prediction result was revised due to the implementation of countermeasures. The probability prediction model was studied by the application of Markov theory. As the limitation of the data collection, the status transfer probability matrix was determined by experience analysis.On the basis of the highway operation safety evaluation and prediction, the decision-making technology of static highway operation safety management was studied. The criteria for project-level and network-level management was provided based on the quantitative evaluation and prediction result. The corresponding decision-making models for project-level and network-level management were established by adopting optimization method and markov decision process.Finally, the static highway operation safety management system is applied on Hu-rongxi freeway for practice. And the following work is discussed briefly.