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针对平原区四车道无中间分隔带公路,借用事故预测模型技术研究其安全特征和规律。基于该类公路安全的定性和定量分析,确定了普通路段、村庄路段、交叉口路段的分段方案,并加强了对货车等车型构成的考虑。建模结果中,交通量、自然交通量中货车比例、第一层路侧危险度、竖曲线弯曲度、横坡度、路面宽度对普通路段,交通量、折算交通量中货车比例、第一层路侧危险度对交叉口路段,交通量、加权的横坡度、路基宽度等对村庄路段的事故有显著影响。最后进行了实例分析。
Aiming at the four lanes without middle separated belt road in the plains area, the safety features and rules are studied by using the accident prediction model technology. Based on the qualitative and quantitative analysis of this kind of highway safety, the sub-schemes of ordinary road sections, village road sections and intersections are confirmed and the formation of trucks and other vehicles is strengthened. In the modeling results, the traffic volume, the proportion of trucks in the natural traffic, the risk of the first-level roadside, the curve of the vertical curve, the cross-slope, the width of the road surface to the ordinary sections, the traffic volume, The roadside risk has a significant effect on the intersections, traffic volume, weighted transverse gradient, subgrade width and other accidents on the village road sections. Finally, an example analysis.