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为了描述信号控制路段的行程时间,基于累计曲线法提出了城市基本道路的行程时间模型.首先利用交通波方法分析了路段排队形成及消散过程;然后构建路段入口和出口的累计曲线,通过累计曲线得到了单车道、稳定流量输入条件下的形成时间函数;最后考虑路段的拓扑结构特性,将多车道路段分解成多个单车道的组合,并得出了基本道路的行程时间模型.该行程时间函数是路段长度、流量以及信号控制参数的函数.数值分析显示,行程时间取决于路段交通供给-需求情况,且在高峰情况下更加敏感.
In order to describe the travel time of signal control section, the travel time model of urban basic road is proposed based on the cumulative curve method.First, the formation and dissipation process of road section queuing is analyzed by traffic wave method, then the cumulative curve of entrance and exit of road section is constructed, The formation time function of single-lane and steady-flow input is obtained. Finally, considering the topological characteristics of road sections, the multi-lane section is decomposed into a combination of multiple single lane, and the travel time model of the basic road is obtained. The function is a function of link length, flow and signal control parameters.The numerical analysis shows that the travel time depends on the road traffic supply-demand situation and is more sensitive at peak conditions.