Probe vehicle-based traffic state estimation method with spacing information and conservation law |
| |
Institution: | 1. Key Laboratory of Road and Traffic Engineering, Tongji University, Shanghai 201804, China;2. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong;3. Department of Civil and Environmental Engineering, Utah State University, Logan, UT 84322-4110, USA;4. Department of Applied Mathematics and Computational Sciences, University of Cantabria, Santander 39005, Spain;1. Center for Environmental Research & Technology, University of California, Riverside, 1084 Columbia Avenue, Riverside, CA 92507, USA;2. Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute, 110 Eighth Street, 4034 Jonsson Engineering Center, Troy, NY 12180-3590, USA |
| |
Abstract: | This paper proposes a method of estimating a traffic state based on probe vehicle data that contain spacing and position of probe vehicles. The probe vehicles were assumed to observe spacing by utilizing an advanced driver assistance system, that has been implemented in practice and is expected to spread in the near future. The proposed method relies on the conservation law of the traffic flow but is independent of a fundamental diagram. The conservation law is utilized for reasonable aggregation of the spacing data to acquire the traffic state, i.e., a flow, density and speed. Its independence from a fundamental diagram means that the proposed method does not require predetermined nor exogenous assumptions with regard to the traffic flow model parameters. The proposed method was validated through a simulation experiment under ideal conditions and a field experiment conducted under actual traffic conditions; and empirical characteristics of the proposed method were investigated. |
| |
Keywords: | Probe vehicle Traffic flow Traffic state estimation Conservation law Spacing measurement Advanced driver assistance system |
本文献已被 ScienceDirect 等数据库收录! |
|