公路交叉口交通工程设施优化设计研究

针对公路交叉口交通事故频发的问题,为降低交通事故发生率,该文从交通设施优化设计角度对公路交通安全进行提升和改善。在满足我国现行标准的条件下,通过对公路交叉口的车道、控制方式、交通标志参数等进行优化,改善交通标志支撑方式、视认模型,采用定量分析法分析交叉口改线、隔离设施及交通标志的优化设计要点,结果表明:交叉口采用十字交叉或设置平交渠化岛并设左转车道,可以提升交叉口安全性能;隔离栅高度采用1.5~2 m,采用锌铝合金镀层等防腐措施,可以提升交通设施的使用效果;交通提醒标志采用白底黑字,可以警示驾驶员,减少交通事故发生率。说明对交叉口交通设施进行优化设计,可以有效提升公路交通安全等级,减低事故发生率,同时还能够提升公路服务及道路景观质量。

In view of the frequent traffic accidents at highway intersections,in order to reduce the incidence of traffic accidents,this paper improves and improves the highway traffic safety from the point of view of the optimization design of traffic facilities.In the condition of meeting the current standards of our country,the lane,control mode and traffic sign parameters of highway intersections are optimized to improve the traffic sign support mode and recognition model.The main points of the optimal design of intersection realignment,isolation facilities and traffic signs are analyzed by quantitative analysis.The results show that the intersection type adopts cross intersection or flat intersection canalization island and left turn lane.It can improve the safety performance of intersections.The height of the fence adopts 1.5~2 m,zinc-aluminum alloy coating and other anti-corrosion measures,which can improve the use effect of traffic facilities;traffic warning signs with black and white background can warn drivers and reduce the incidence of traffic accidents.It shows that the optimal design of traffic facilities at intersections can effectively improve the level of highway traffic safety,reduce the incidence of accidents,and improve the quality of highway service and road landscape.