基于OD分布的环形交叉口车辆行程时间建模

doi:10.13229/j.cnki.jdxbgxb201601011

摘要/Abstract

摘要： 为直观地反映环形交叉口的车辆拥挤程度,建立了一种基于OD分布的环形交叉口车辆行程时间估计模型。首先针对环形交叉口的特殊性,运用几何知识,建立了无干扰状态下环形交叉口几何尺寸与车辆行程时间的关系模型;其次运用概率统计方法,分析车辆在环形交叉口的车道选择特性,建立了特定OD下的车辆换道次数模型,从而得到车辆由于换道引起的延误时间;然后通过实测数据,分析了交织区断面流量与车辆排队等待时间的关系,建立了车辆在交织区入口处的等待时间模型;最后,运用实测数据对模型进行了参数标定和检验,结果表明,本文模型预测误差在10%以内,满足精度要求。

关键词: 交通运输系统工程, 环形交叉口, 行程时间, 车道选择, 换道行为

Abstract: In order to directly reflect the degree of congestion at roundabout, a model of vehicle travel time at roundabout was propose based on Origin-Destination (OD) distribution. First for the particularity of roundabout, a relationship model between roundabout geometric dimension and the vehicle travel time under noninterference state was established applying geometric knowledge. Second, probabilistic statistical methods were used to analyze the vehicle's characteristics of lane choosing at roundabout, and a vehicle lane change model was established under specific OD, thus to obtain the vehicle delay caused by lane changing. Third, by analyzing the actual survey data and the relationship between flow rate at weaving section and waiting time, a waiting time model of vehicle at the entrance of weaving area was built. Finally, the model parameters were calibrated and the model was validated using survey data. Results show that the prediction error of the proposed model was within 10% that meets the accuracy requirement.

Key words: engineering of communication and transportation system, roundabout, travel time, lane choose, lane changing behavior

中图分类号:

U491.1

宋现敏, 刘焕峰, 李志慧, 陶鹏飞, 杨秋杰. 基于OD分布的环形交叉口车辆行程时间建模[J]. 吉林大学学报(工学版), 2016, 46(1): 70-75.

SONG Xian-min, LIU Huan-feng, LI Zhi-hui, TAO Peng-fei, YANG Qiu-jie. New model of vehicle travel time at roundabout based on OD distribution[J]. 吉林大学学报(工学版), 2016, 46(1): 70-75.

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