Real-time freeway traffic state estimation for inhomogeneous traffic flow

Mingming Zhao, Hongxin Yu, Yibing Wang, Bin Song, Liang Xu and Dianchen Zhu

Physica A: Statistical Mechanics and its Applications, 2024, vol. 639, issue C

Abstract: This paper addresses model-based approach considering online model parameters estimation to estimate the real-time freeway traffic state for inhomogeneous traffic flow. Its effectiveness is demonstrated through macroscopic simulation and the influence of detector configuration on the estimation performance is investigated. The results indicate that when a freeway is inhomogeneity, additional detectors need to be placed at the boundary of traffic flow inhomogeneity to achieve better estimation performance. Finally, it is confirmed that considering traffic flow inhomogeneity can achieve better estimation performance using real expressway data from Shanghai.

Keywords: Freeway traffic state estimation; Traffic flow inhomogeneity; Macroscopic traffic flow model; Extended Kalman filtering (EKF); Detector configuration; Large-scale real-data application (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:639:y:2024:i:c:s0378437124001419

DOI: 10.1016/j.physa.2024.129633

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