论文部分内容阅读
针对现有交叉口转弯比例计算的约束非线性规划模型不满足交叉口流量守恒方程、准确性欠佳等不足,引入道路通行能力比TCR(Traffic Capacity Ratio),建立了改进的交叉口转弯比例计算模型,并用于交叉口各相位流量的估计,其估计值为优化路网流量分配方案和交通交叉口信号相位控制方案提供了依据。以典型的交叉口为例,在不同的交通流量环境下,利用TransModeler交通仿真软件平台进行了试验验证,并与典型的约束非线性规划模型的研究成果进行比较。结果表明:提出的转弯比例计算模型更易满足交叉口流量守恒方程,转弯比例的计算准确度获得了明显提高,且将其用于相位流量的估计中取得了更好的效果。
In order to overcome the shortcomings of the constrained nonlinear programming model of turn ratio calculation of the existing intersections, such as the traffic capacity ratio (TCR) and the poor accuracy of the traffic flow equations at the intersections, the improved turn ratio calculation Model and used for the estimation of the phase flow at the intersection. The estimated values provide the basis for optimizing the network traffic distribution scheme and the signal phase control scheme of the traffic intersection. Taking a typical intersection as an example, this paper uses TransModeler traffic simulation software platform under different traffic flow environment to verify the experimental results and compares it with the research results of a typical constrained nonlinear programming model. The results show that the proposed turning ratio calculation model can more easily satisfy the cross-flow conservation equation, and the calculation accuracy of the turning ratio is obviously improved. And the better results are obtained when used in the phase flow estimation.