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高速公路事故预测模型

Keywords: 高速公路,事故预测模型,广义线性回归,负二项分布,弹性分析,统计分析

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Abstract:

为了掌握高速公路未来的安全状况,通过有效地控制各种影响因素,减少交通事故,增进高速公路安全,在路段划分和影响因素分析的基础上,利用收集的多条高速公路数据建立了基于广义线性回归的高速公路事故预测模型,通过比较泊松、负二项、零堆积泊松和零堆积负二项4种概率分布模型回归的结果,最终确定了负二项分布形式的事故预测模型,并利用弹性分析的方法确定了模型中单个变量对事故的边际影响.研究表明:环境变量和交通流变量对事故的发生有较大影响.

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