Network-Wide Traffic State Estimation and Rolling Horizon-Based Signal Control Optimization in a Connected Vehicle Environment

• Published in: IEEE transactions on intelligent transportation systems Vol. 23; no. 6; pp. 5840 - 5858
• Main Authors: Emami, Azadeh, Sarvi, Majid, Bagloee, Saeed Asadi
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: adaptive traffic signal control; Algorithms; Artificial neural networks; connected transport system; Connected vehicles; Estimation; Kalman filter; Kalman filters; Model testing; neural network; Neural networks; Optimization; Penetration; penetration rate; Prediction algorithms; Sensors; State estimation; Traffic control; Traffic flow; Traffic information; Traffic planning; Traffic signals
• ISSN: 1524-9050; 1558-0016
• DOI: 10.1109/TITS.2021.3059705

This paper presents an innovative method to adaptively optimize traffic signal plans based on the estimation of traffic situation achieved from the information of various penetration rates of Connected Vehicles (CVs). The network-wide signal control problem is formulated as a linear optimization problem. Moreover, we develop a Kalman filter (KF) and Neural Network (NN) algorithms to predict and update the traffic situation under mixed non-connected and connected vehicles environment. To capture the dynamic of the traffic flow, we employ the cell transmission model synched with the Vissim traffic simulator. The methodology is tested using a challenging network of six intersections. We test our model for various Penetration Rates (PR) of the CV to provide a comparative analysis. The performance of the method is also compared with a conventional actuated-coordinated traffic signal plan. The results show that with a bare minimum PR (say more than 30%), our proposed methodology outperforms the actuated traffic signal plan. (note that the minimum PR is subject to further ongoing research in the literature, to the extent that lower PRs might be plausible). Though a 100% PR is highly desirable, our method can fetch the maximum benefit just by 60% PR.