基于行车安全性的公路三维视距研究

Study on 3D Sight Distance of Highway Based on Traffic Safety

文中以公路视距作为研究对象,考虑驾驶员视野及车辆照明范围,利用三次B样条曲线拟合公路空间三维线形,分析公路各线形单元空间特征,提出适用于各线形单元的三维视距计算模型,同时建立了公路三维视距评价标准,并提出处治措施。

Taking the highway sight distance as the research object, considering the driver’s sight field and vehicle lighting range, the cubic B-spline curve is used to fit the 3 D alignment of highway space. Based on the analysis of the spatial characteristics of each linear unit of highway, a 3 D line-of-sight model suitable for each line-of-sight unit is proposed, the evaluation standard of 3 D line-of-sight distance of highway is established, and the treatment measures are put forward. It provides theoretical method and technical support for highway alignment design, traffic safety analysis and evaluation, and improvement of highway traffic safety.