Hub-Based Platoon Formation : Optimal Release Policies and Approximate Solutions
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 5755-5766 |
Number of pages | 12 |
Journal / Publication | IEEE Transactions on Intelligent Transportation Systems |
Volume | 25 |
Issue number | 6 |
Online published | 23 Nov 2023 |
Publication status | Published - Jun 2024 |
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Abstract
This paper studies the optimal hub-based platoon formation at hubs along a highway under decentralized, distributed, and centralized policies. Hubs are locations along highways where trucks can wait for other trucks to form platoons. A coordinator at each hub decides the departure time of trucks, and the released trucks from the hub will form platoons. The problem is cast as an optimization problem where the objective is to maximize the platooning reward. We first show that the optimal release policy in the decentralized case, where the hubs do not exchange information, is to release all trucks at the hub when the number of trucks exceeds a threshold computed by dynamic programming. We develop efficient approximate release policies for the dependent arrival case using this result. To study the value of information exchange among hubs on platoon formation, we next study the distributed and centralized platoon formation policies which require information exchange among hubs. To this end, we develop receding horizon solutions for the distributed and centralized platoon formation at hubs using the dynamic programming technique. Finally, we perform a simulation study over three hubs in northern Sweden. The profits of the decentralized policies are shown to be approximately 3.5% lower than the distributed policy and 8% lower than the centralized release policy. This observation suggests that decentralized policies are prominent solutions for hub-based platooning as they do not require information exchange among hubs and can achieve a similar performance compared with distributed and centralized policies. © 2023 IEEE.
Research Area(s)
- cyber-physical systems, Dynamic programming, Information exchange, optimal control, Platoon coordination, Random variables, Roads, Schedules, simulation, transport planning, Urban areas, Vehicles
Citation Format(s)
Hub-Based Platoon Formation: Optimal Release Policies and Approximate Solutions. / Johansson, Alexander; Nekouei, Ehsan; Sun, Xiaotong et al.
In: IEEE Transactions on Intelligent Transportation Systems, Vol. 25, No. 6, 06.2024, p. 5755-5766.
In: IEEE Transactions on Intelligent Transportation Systems, Vol. 25, No. 6, 06.2024, p. 5755-5766.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review