基于AVL数据的公交到站时间实时预测模型

公交车辆到站时间预测是公交信息服务、公交动态调度的关键参数。基于实时和历史的公交车辆自动定位数据(AVL)需求分析,将公交车辆到站时间划分为站点停靠时间、区段全程运行时间和区段部分运行时间,分别采用点估计法、BP神经网络法和自适应指数平滑法对其进行动态预测。最后结合实验线路公交车辆的AVL运行数据,对预测模型进行了验证和评价分析。研究结果表明:本预测模型由于将历史数据规律和实时交通状况进行了有效融合,从而提高了公交到站时间预测的鲁棒性和预测精度。

Dynamic Prediction Model of Bus Arrival Time Based on AVL Data

Prediction of bus arrival time plays an important role in transit information service and dynamic scheduling.Based on needs analysis of automatic vehicle location(AVL) data,bus arrival time is divided into three components,including dwell time on stations dynamically predicted by point estimate algorithm,all travel time in intervals by back-propagation network algorithm and part travel time in intervals by self adaptive thrice exponential smoothing algorithm.In addition,these models are validated and evaluated based on the AVL data provided by the experimental bus line.It's found that the model improves predicting index performances of robustness and precision because of the effective integration of regular patterns from historical data and real traffic conditions from dynamical data.