大运量轨道交通对城市道路交通的影响分析

Analysis of Impact of High-Capacity Rail Transit on Urban Road Traffic

摘要:

城市轨道交通作为大容量、高速度、集约化的公共交通方式，对城市道路交通的改善和交通系统的优化升级具有不可替代的作用。通过实地调查，对比了济南市轨道交通4号线开通前后，经十路主要交叉口早高峰交通量、信号延误和服务水平的变化，并以此为基础分析了轨道交通客流量与交叉口延误间的数量关系。通过函数拟合，建立了二者之间的二次模型。最后，代入经十路其他几处交叉口的相关数据进行验证，模型预测结果与实际调查数据间的误差不超过15%，吻合度较高。

Abstract:

As a large-capacity, high-speed and intensive public transportation, the urban rail transit plays an irreplaceable role in improving urban road traffic, and optimizing and upgrading the transportation system. Based on field surveys, the changes in traffic volume in peak morning hours, signal delay and service level at major intersections on Jingshi Road are compared before and after the opening of Jinan Metro Line 4. On this basis, the quantitative relationship between metro passenger flow and intersection delay is analyzed. A quadratic model between the both is established through function fitting. Finally, the relevant data from several other intersections on Jingshi Road are substituted for verification. The error between the model prediction results and the actual survey data is not more than 15%, indicating a high degree of agreement.