摘要
介绍了道路交通事故多发点的多种鉴别方法,对质量控制法进行了改进.在原质量控制法中,没有考虑事故频率μ的统计特征而直接采用观测记录值,导致鉴别结果的准确性下降.参考有关文献,采用形参为nb和尺参为1/tb的伽玛分布作为μ的概率密度函数,计算出平均事故率λ,从而使λ的取值更合理,事故多发点鉴别的结果更准确.最后应用改进后的质量控制法对沈大高速公路进行了事故多发点鉴别,得到了合理的鉴别结果.
This text shows several differentiating methods and the quality control method is improved. Since the star character of the accident frequencyμ which takes record is not analyzed, the precision of the results of the method is decreased. Some literature is consulted which takes nb and 1/tb as the parameters of the GAMMA distribution to compute the equal accident rate λ, which make λ rational and the result exact. Finally, it takes the example of Shen-da expressway to analyze the Black Spots using the method and achieves the rational resuit.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2006年第1期97-100,共4页
Journal of Harbin Institute of Technology
基金
高等学校博士学科点专项科研基金资助项目(20030213030)
