论文部分内容阅读
尽管《公路工程技术标准》(JTG B01-2003)中规定八车道的高速公路应当设置2.5 m的左侧硬路肩,但国内几条刚刚改建完成的八车道高速公路中没有一条设置了左侧硬路肩,甚至没有宽于0.75 m的路缘带。研究运用可接受间隙理论计算了不同流量和车道数条件下车辆从最内侧车道穿插变道停驶到右侧路肩这一过程的概率和所需距离,并通过交通事故数据调研,分析了左侧路肩设置对提高交通安全的影响,从运行效率和交通安全两个方面定性和定量分析了左侧路肩设置的必要性。
Although the Technical Standard for Highway Engineering (JTG B01-2003) stipulates that an eight-lane expressway should have a 2.5 m left hard shoulder, none of the eight newly completed eight-lane expressways in the country has a left-side hard Shoulder, not even 0.75mm wider than the curb belt. Based on the accepted clearance theory, the probability and the required distance of vehicles traveling from the innermost lane to the right side of the road under different traffic flow and lane number conditions are calculated. Based on the traffic accident data, the left side The shoulder set has an impact on improving traffic safety, qualitatively and quantitatively analyzing the necessity of setting the left shoulder from two aspects of operation efficiency and traffic safety.