题名: |
Probe Vehicle Lane Identification for Queue Length Estimation at Intersections |
正文语种: |
英文 |
作者: |
Semuel Y. R. Rompisa; Mecit Cetina; Filmon Habtemichaela |
作者单位: |
Transportation Research Institute, Old Dominion University;Department of Civil Engineering, Sam Ratulangi University |
关键词: |
GPS Probe vehicles; lane identification; queue length estimation; market penetration rate |
摘要: |
Vehicles instrumented with Global Positioning Systems, also known as GPS probe vehicles, have become increasingly popular for collecting traffic flow data. Previous studies have explored the probe vehicle data for estimating speeds and travel time, however there is very limited research on predicting queue dynamics from such data. In this research, a methodology was developed for identifying the lane position of the GPS instrumented vehicles when they are standing in the queue at signalized intersections with multiple lanes, particularly in the case of unequal queue. Various supervised and unsupervised clustering methods were tested on data generated from a microsimulation model. Among the tested methods, the Optimal Bayes Rule that utilizes probability density functions estimated using bivariate statistical mixture models was found to be effective in identifying the lanes. The methodology for lane identification was tested for queue length estimation. This research confirms that the lane identification is an important step required prior to the queue length estimation. The accuracies of the models for lane identification and queue length estimation were evaluated at varying levels of demand and probe vehicle market penetrations. In general, as the market penetration increases, the accuracy improves as expected. The result shows hat 40% market penetration rate is adequate to reach about 90% accuracy. |
出版年: |
2018 |
期刊名称: |
Journal of Intelligent Transportation Systems Technology Planning and Operations |
卷: |
22 |
期: |
1 |
页码: |
10-25 |