交通信息与安全2017，Vol.35Issue(5)：76-82,7.DOI:10.3963/j.issn.1674-4861.2017.05.010
基于ETC交易数据的高速公路行程速度提取模型
A Model of Travel Speed Calculation for Freeway Road Segments with ETC Transaction Data
翁剑成 1王媛 1袁荣亮 2马思雍1
作者信息
- 1. 北京工业大学北京市城市交通运行保障工程技术研究中心 北京100124
- 2. 北京市城市规划设计研究院 北京100045
- 折叠
摘要
Abstract
Aiming to enhance the level of monitoring of expressway status,a procedure of data preprocessing is presented,and structure of ETC transaction data within a calculation period is analyzed to establish a dual-level calculation model of travel speed under different levels of sample sizes.In order to improve credibility of velocity extraction under conditions of small samples,the ETC data of different enter-leave toll plazas pairs is used to extracting the travel speed of a road section.A velocity correction method is proposed bases on the speed reduction factor a and speed reliable weight θ coming from OD investigation.The model is verified by a special designed field experiments.The results show that the mean absolute error is 4.5 km/h,and the average relative error is about 6.5％.The mean square errors are 2.38 km/h and 3.39 km/h in peak and non-peak periods,respectively.It shows that stability of the model in peak periods is better than which in non-peak periods.However,the results cannot entirety reflect driving states.In future,other data can be applied to increase the accuracy and reliability of traffic running status on freeways.关键词
交通工程/ETC数据/速度提取模型/数据挖掘/高速公路/信息提取Key words
traffic engineering/ETC data/velocity extraction model/data mining/expressway/information extraction分类
交通工程引用本文复制引用
翁剑成,王媛,袁荣亮,马思雍..基于ETC交易数据的高速公路行程速度提取模型[J].交通信息与安全,2017,35(5):76-82,7.
