Abstract: The advantages and disadvantages of typical traffic incident detection algorithms were analyzed comprehensively. The traditional increment comparison algorithm was improved and a new algorithm was proposed , which had six outputs that could reflect the whole process of traffic incident from the beginning to the end. By means of traffic simulation software TSIS , the improved increment comparison algorithm was simulated and the results verified the effectiveness of the improved algorithm , which took the detection rate , false alarm rate and average test time as evaluation indexes. By analyzing the relationship among traffic flow parameters , the distinguish standards of traffic incident property were determined. Finally , the fuzzy logic and the improved increment comparison algorithm were integrated organically , and then the incident detection algorithm of freeway based on fuzzy logic was established.

Key words: traffic engineering, algorithm, simulation, incident detection, freeway, fuzzy logic

摘要： 综合分析了常见典型的交通事件检测算法的优缺点，改进了传统的增量比较算法，构建了一种新算法，该算法 具有6个输出，可以反映交通事件从产生到结束的全过程。借助交通仿真软件TSIS对改进的增量比较算法进行模 拟仿真，以检测率、误报率、平均检测时间作为评价指标，结果验证了算法的有效性。分析了交通流参数的相互关 系，确定了交通事件性质的判别标准。将模糊逻辑和改进的增量比较算法进行有机融合，建立了基于模糊逻辑的高 速公路交通事件检测算法。

关键词: 交通工程, 算法, 仿真, 事件检测, 高速公路, 模糊逻辑