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Electrical Engineering and Systems Science > Systems and Control

arXiv:2111.07056 (eess)
[Submitted on 13 Nov 2021 (v1), last revised 3 Feb 2022 (this version, v2)]

Title:Selection of the Speed Command Distance for Improved Performance of a Rule-Based VSL and Lane Change Control

Authors:Tianchen Yuan, Faisal Alasiri, Petros A. Ioannou
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Abstract:Variable Speed Limit (VSL) control has been one of the most popular techniques with the potential of smoothing traffic flow, maximizing throughput at bottlenecks, and improving mobility and safety. Despite the substantial research efforts in the application of VSL control, few studies have looked into the effect of the VSL sign distance from the point of an accident or a bottleneck. In this paper, we show that this distance has a significant impact on the effectiveness and performance of VSL control. We propose a rule-based VSL strategy that matches the outflow of the upstream VSL zone with the bottleneck capacity based on a multi-section Cell Transmission Model (CTM). Then, we consider the distance of the upstream VSL zone as a control variable and perform a comprehensive analysis of its impact on the performance of the closed-loop traffic control system based on the multi-section CTM. We develop a lower bound that this distance needs to satisfy in order to guarantee homogeneous traffic density across sections and reduce bottleneck congestion. The bound is verified analytically and demonstrated using microscopic simulation of traffic on I-710 in Southern California. The simulations are used to quantify the benefits on mobility, safety and emissions obtained by selecting the upstream VSL zone distance to satisfy the analytical lower bound. The developed lower bound is a design tool which can be used to tune and improve the performance of VSL controllers.
Comments: 10 pages, 9 figures, 2 tables, submitted to T-ITS
Subjects: Systems and Control (eess.SY)
Cite as: arXiv:2111.07056 [eess.SY]
  (or arXiv:2111.07056v2 [eess.SY] for this version)
  https://doi.org/10.48550/arXiv.2111.07056
Related DOI: https://doi.org/10.1109/TITS.2022.3157516

Submission history

From: Tianchen Yuan [view email]
[v1] Sat, 13 Nov 2021 06:27:26 UTC (1,730 KB)
[v2] Thu, 3 Feb 2022 02:30:10 UTC (1,560 KB)
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