基于层次分析的交通状态模糊综合评价方法

Fuzzy Comprehensive Evaluation for Traffic State Based on Analytic Hierarchy Process

城市交通状态的评价分析是实施交通管理与交通诱导的基础。为了得到准确的交通状态信息,本文提出了一种基于层次分析结合模糊综合评价的方法。评价过程中侧重于权重的分析,应用层次分析方法确定权重时,不只是单独用该方法中的一个计算方法,而是利用4种计算方法分别计算出交通状态的影响权重值,对4种权重值进行平均得到一个权重平均值作为最终权重向量。以赣州市章贡区K1线路的交通状态为例,通过层次分析法的4种计算方法分别对该线路上17个路段和4个交叉口的影响权重做出计算,以其平均值作为最终权重值。结合模糊综合评价方法对该线路的交通状态做出评价。实例验证结果表明,交叉口对交通状态的评价占据比较大的权重。同时,取平均值求得的权重值比4种计算方法单独计算取得的权重值更加合理科学。实例验证了方法的合理性和实用性。

The evaluation of urban traffic state analysis is the basis for traffic management and traffic guidance. To get accurate traffic state information, a method based on hierarchy analysis and fuzzy comprehensive evaluation is proposed. The evaluation focuses on the analysis of the weight. In the process of application of hierarchical analysis method, four kinds of calculation methods rather than one method alone are used to calculate the weight value under the traffic state, and the final weight vector is based on the average of the four weights. Taking the traffic state of Line K1 in Ganzhou city as an example, the four calculation methods of hierarchical analysis are used respectively to calculate the weights of 17 roads and 4 intersections, and the final weight is based on the average of the total weight. Last, analytic hierarchy process combines with fuzzy comprehensive evaluation method is used to evaluate the traffic state of the line. The experimental result shows that the influence of the intersection of traffic state cannot be neglect. At the same time, the new method of obtaining the average weight value is more scientific and convincing than that of using the 4 methods alone. Therefore, the new method is proved rational and practical.