Virtual Rings on Highways: Traffic Control by Connected Automated Vehicles

Molnár, Tamás G.; Hopka, Michael; Upadhyay, Devesh; Nieuwstadt, Michiel Van; Orosz, Gábor

doi:10.1007/978-3-031-06780-8_16

Cited by 3 publications

(2 citation statements)

References 68 publications

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“…If N → ∞ or practically N is a big enough number, this model can describe the behaviour of a straight road traffic flow. Comprehensive literature about ring configuration can be found in [28] and the related field tests and measurements in [13,29,30] which validate the theoretical findings. Furthermore, stability analysis considering the penetration ratio of AV on ring road configuration is analysed in [31].…”

Section: Introductionsupporting

confidence: 66%

“…( 3) and ( 4) to investigate the fundamental effects of acceleration saturation. Nevertheless, only a few vehicles on a ring can give an insight on how a larger and more realistic system will behave [28]. During this analysis, the first vehicle is considered as an autonomous vehicle and its control gain can be tuned α, but β a and τ a are fix.…”

Section: Methods For Nonlinear Analysismentioning

confidence: 99%

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Nonlinear effects of saturation in the car-following model

Martinovich

2022

Nonlinear Dyn

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The goal of this paper is to provide insight about the effect of acceleration saturation in the car-following model. In this contribution, we consider a heterogeneous, mixed-traffic scenario which contains both human-driven and autonomous vehicles subjected to time delays. Corresponding stability charts are provided from which one can tune the control parameters of the automated vehicles to achieve smooth traffic flow. By taking into account the acceleration saturation, it modifies the global behaviour of the system and reduces the range of the optimal technological parameters. On a demonstrative example, we highlight the complex dynamical phenomenon induced by the saturation and we attempt to connect these nonlinear investigations to the engineering practice and point out their relevance.

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Section: Introductionsupporting

confidence: 66%

Section: Methods For Nonlinear Analysismentioning

confidence: 99%

Nonlinear effects of saturation in the car-following model

Martinovich

2022

Nonlinear Dyn

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A novel rough numbers based extended MACBETH method for the prioritization of the connected autonomous vehicles in real-time traffic management

Gökaşar

Pamučar

Deveci

et al. 2023

Expert Systems with Applications

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Destroying Phantom Jams with Connectivity and Automation: Nonlinear Dynamics and Control of Mixed Traffic

Molnar,

Orosz

2024

Transportation Science

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Connected automated vehicles (CAVs) have the potential to improve the efficiency of vehicular traffic. In this paper, we discuss how CAVs can positively impact the dynamic behavior of mixed traffic systems on highways through the lens of nonlinear dynamics theory. First, we show that human-driven traffic exhibits a bistability phenomenon, in which the same drivers can both drive smoothly or cause congestion, depending on perturbations like a braking of an individual driver. As such, bistability can lead to unexpected phantom traffic jams, which are undesired. By analyzing the corresponding nonlinear dynamical model, we explain the mechanism of bistability and identify which human driver parameters may cause it. Second, we study mixed traffic that includes both human drivers and CAVs, and we analyze how CAVs affect the nonlinear dynamic behavior. We show that a large-enough penetration of CAVs in the traffic flow can eliminate bistability, and we identify the controller parameters of CAVs that are able to do so. Ultimately, this helps to achieve stable and smooth mobility on highways. History: This paper has been accepted for the Transportation Science Special Issue on ISTTT25 Conference. Funding: This work was supported by the University of Michigan’s Center for Connected and Automated Transportation [U.S. DOT Grant 69A3551747105]. Supplemental Material: The online appendix is available at https://doi.org/10.1287/trsc.2023.0498 .

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Virtual Rings on Highways: Traffic Control by Connected Automated Vehicles

Cited by 3 publications

References 68 publications

Nonlinear effects of saturation in the car-following model

Nonlinear effects of saturation in the car-following model

A novel rough numbers based extended MACBETH method for the prioritization of the connected autonomous vehicles in real-time traffic management

Destroying Phantom Jams with Connectivity and Automation: Nonlinear Dynamics and Control of Mixed Traffic

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