期刊
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
卷 97, 期 -, 页码 147-158出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.trc.2018.10.012
关键词
Traffic volume estimation; Regression; Multi-layered neural networks; Vehicle probe data
资金
- I-95 Corridor Coalition through the Volume and Turning Movement Project
This paper focuses on the problem of estimating historical traffic volumes between sparsely located traffic sensors, which transportation agencies need to accurately compute statewide performance measures. To this end, the paper examines applications of vehicle probe data, automatic traffic recorder counts, and neural network models to estimate hourly volumes in the Maryland highway network, and proposes a novel approach that combines neural networks with an existing profiling method. On average, the proposed approach yields 24% more accurate estimates than volume profiles, which are currently used by transportation agencies across the US to compute statewide performance measures. The paper also quantifies the value of using vehicle probe data in estimating hourly traffic volumes, which provides important managerial insights to transportation agencies interested in acquiring this type of data. For example, results show that volumes can be estimated with a mean absolute percent error of about 21% at locations where average number of observed probes is between 30 and 47 vehicles/h, which provides a useful guideline for assessing the value of probe vehicle data from different vendors.
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