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Study of the impact of type and condition of the road surface on parameters of signalized intersection

机译：路面类型和状况对信号交叉口参数影响的研究

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This paper explores the effects of the road surface type and condition on the traffic flows management mode in case of directive management. The subject matter of the study is the process of traffic flow movement at a signalized intersection. The scope of the study is the method of assessment of effect of the road surface type and condition on the capacity rate of the signalized area and therefore its effects on the traffic flow management mode. Building on the existing scientific data, the authoring team carried out studies in the area of signal control and determined a number of parameters that have an effect on traffic management modes in urban environment. The analysis of papers on the saturation flow value that is used to calculate the parameters of a signalized intersection and experimental findings showed that this value is influenced by the tyre friction coefficient which is the main parameter of the road surface type and condition. It was revealed that these parameters of the road surface have their effect on the parameters of a signalized intersection, i.e. cycle length and timing. The study showed that there is a correlation between this value (friction coefficient) and the capacity of the managed area (saturation flow) resulting in the change of the traffic lights cycle, which is also corroborated by the conducted field experiment on a signalized intersection. Saturation flow rates for the main road surface types and conditions were calculated (dry and wet asphalt, snowy and icy surface). The values of cycle length increase required in case of change of the road surface type or condition were defined.
机译：本文探讨了在指示管理情况下路面类型和状况对交通流管理模式的影响。研究的主题是信号交叉口的交通流移动过程。研究的范围是评估路面类型和状况对信号化区域通行能力的影响及其对交通流管理模式的影响的评估方法。在现有的科学数据基础上，创作团队在信号控制领域进行了研究，并确定了一些对城市环境中的交通管理模式有影响的参数。对用于计算信号交叉口参数的饱和流量值的论文分析和实验结果表明，该值受轮胎摩擦系数的影响，轮胎摩擦系数是路面类型和状况的主要参数。已经发现，道路表面的这些参数对信号交叉口的参数即周期长度和时间有影响。研究表明，该值（摩擦系数）与受管理区域的容量（饱和流量）之间存在相关性，导致交通信号灯周期发生变化，这在信号交叉口上进行的实地实验也得到了证实。计算了主要路面类型和条件的饱和流量（干，湿沥青，雪和冰表面）。定义了改变路面类型或状况时所需的循环长度增加值。

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