考虑不同出口转向的城市道路行程时间估计

发布时间：2018-07-04 06:47

本文选题：交通工程 + 行程时间　；参考：《公路交通科技》2017年02期

【摘要】：为了有效利用城市道路行程时间数据,提高道路交通状态预测精度,提出了一种考虑交叉口不同出口转向的行程时间估算方法。针对现有行程时间计算模型存在忽略交叉口不同出口转向交通运行状况不均衡性的现象,提出了交叉口上下游出口转向的概念,通过融合定点检测器和探测车数据,在原有累积直方图模型的基础上建立了交叉口不同出口转向的行程时间累积直方图模型。最后以香江路为例进行数据分析,验证了模型的有效性和准确性。研究结果表明:新模型得到的行程时间计算值与视频检测设备获取的实测值相比误差在10%左右,且相对纯探测车方法预测精度更高,说明考虑不同出口转向的城市道路行程时间估计模型可行。
[Abstract]:In order to effectively utilize the data of urban road travel time and improve the precision of road traffic state prediction, a method for estimating the travel time of intersection with different exit turns is proposed. In view of the fact that the current travel time calculation models ignore the imbalance of the traffic running condition of different exit steering at intersections, the concept of upstream and downstream exit steering of intersections is put forward, which is based on the fusion of fixed-point detector and rover data. Based on the original cumulative histogram model, the travel time cumulative histogram model of intersection with different exit turns is established. Finally, taking Xiangjiang Road as an example, the validity and accuracy of the model are verified. The results show that the error of the calculated travel time obtained by the new model is about 10% compared with the measured value obtained by the video detection equipment, and the prediction accuracy of the new model is higher than that of the pure detection vehicle method. It shows that it is feasible to estimate the travel time of urban road considering different exit steering.
【作者单位】：青岛理工大学汽车与交通学院;
【基金】：国家自然科学基金项目(51178231) 山东省自然科学基金项目(ZR2012EEL28)
【分类号】：U491

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