Bottleneck mitigation through a variable speed limit system using connected vehicles

Grumert, Ellen; Tapani, Andreas

doi:10.1080/23249935.2018.1547332

Cited by 12 publications

(6 citation statements)

References 47 publications

(94 reference statements)

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“…Khondaker and Kattan ( 20 ) presented a VSL control algorithm for simultaneously achieving mobility, safety, and environmental benefits in a CV environment. Grumert and Tapani ( 21 ) proposed a VSL system based on CVs to allow for the application of VSLs in connection with non-recurrent bottlenecks. Their results indicated that the VSL system managed to improve traffic efficiency in a majority of the simulated cases ( 21 ).…”

Section: Literature Reviewmentioning

confidence: 99%

“…Grumert and Tapani ( 21 ) proposed a VSL system based on CVs to allow for the application of VSLs in connection with non-recurrent bottlenecks. Their results indicated that the VSL system managed to improve traffic efficiency in a majority of the simulated cases ( 21 ). Li et al ( 22 ) propose an MPC strategy of a novel VSL using a line of connected automated vehicles.…”

Section: Literature Reviewmentioning

confidence: 99%

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Variable Speed Limit Strategy With Dynamic Control Cycle Based on Predictive Control

Liang

2022

Transportation Research Record: Journal of the Transportation R

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In recent years, variable speed limit (VSL) strategies have proven to be an efficient control measure to mitigate traffic congestion at freeway bottlenecks. In general, the VSL change time is a constant value. However, there are certain limitations in traffic situations handled by a constant cycle VSL. Therefore, in this paper, we develop a dynamic cycle strategy of VSL based on predictive control. We first analyze the applicable situation of the dynamic control cycle and establish a probability model to determine the range of cycle selection. Then, the cell transmission model predicts the parameters of macroscopic traffic flow. Finally, an optimization algorithm is designed that is suitable for this strategy, which optimizes the cycle and speed limit options. An objective optimization function is formulated to minimize the total travel time. A sensitivity analysis is applied to compare different control strategies under a variety of road bottleneck structures by both the numerical analysis and simulation experiments. The simulation results show that the strategies and algorithms proposed in this paper can effectively reduce traffic congestion duration and enhance the service level of a freeway network.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Variable Speed Limit Strategy With Dynamic Control Cycle Based on Predictive Control

Liang

2022

Transportation Research Record: Journal of the Transportation R

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“…Real-time traffic information systems, for instance, traveler information messages (TIM), or variable message signs (VMS), are considered as an efficient method to convey messages to drivers with traffic information and upcoming incidents. This method could be embedded in autonomous/CVs (Genders & Razavi, 2016) where CVs provide continuous realtime information sources about their speed and location to estimate the traffic conditions at random locations (Grumert & Tapani, 2020). Sui and Young (2014) developed a linear regression model to identify the impacts of VMS on driver speed behavior under different adverse weather conditions using field data.…”

Section: Based Traveler Information Messagesmentioning

confidence: 99%

Evaluating connected vehicle-based weather responsive management strategies using weather-sensitive microscopic simulation

Jiang

Dong

Guo

et al. 2021

Journal of Intelligent Transportation Systems

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The purpose of this study is to perform analysis, modeling, and simulation (AMS) to investigate the effectiveness of connected vehicle (CV)-based Weather Responsive Management Strategies (WRMS) to address safety concerns on freeway corridors under adverse weather conditions. This study investigates three CV-based WRMS applications: Forward Collision Warning (FCW), Early Lane Change (ELC) advisory, and Variable Speed Limit (VSL), designs operational alternatives for WRMS using CV data, and develops an AMS tool using a weather-sensitive microscopic traffic simulator to understand the effectiveness of the three WRMS under different scenarios. Various CV market penetration rates (MPR), weather conditions, and WRMS algorithm settings are tested in this study. The case study is based on a real-world freeway corridor, a segment of the I-80 Connected Vehicle Testbed in Wyoming. The simulation results show the effectiveness of selected WRMS applications and provide operational insights that state and local transportation agencies may use in future strategic planning and operations of their weather-responsive programs.

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“…Perraki et al [20] used the MPC strategy proposed by Roncoli et al [21] to assess CAVs and conventional control measures for a complex real network in a realistic simulation environment. Grumert and Tapani [22] proposed a CV based VSL system in which CVs are used to estimate traffic state and the current speed limit is communicated directly to the CVs.…”

Section: Introductionmentioning

confidence: 99%

Improving Motorway Mobility and Environmental Performance via Vehicle Trajectory Data-Based Control

Zhao

Yin

et al. 2020

IEEE Access

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High cost and relatively low reliability of stationary sensors hinder the wide spread of advanced motorway traffic control measures. In this research, we propose a vehicle trajectory data based variable speed limit (VSL) controller to improve mobility and environmental performance of motorways. First, a model based estimator is designed to estimate traffic states using data directly derived from probe vehicle with spacing measurement equipment (PVSMEs). Extended kalman filter (EKF) and METANET model are employed as the data assimilation tool and the process model for the estimator, respectively. Next, we incorporate the estimator with a model predictive control (MPC) to realize optimal VSL control. Finally, a 3.2km stretch in Auckland, New Zealand is selected and simulated to evaluate the proposed VSL under various PVSME penetration rates and traffic scenarios. The simulation results reveal that the PVSME-based VSL controller offers an effective solution to improve mobility and environmental performance of motorways. With an increase in PVSME penetration rates, the mobility and environmental benefits of the PVSME-based VSL increase. INDEX TERMS Emission reduction, travel time reduction, trajectory data, motorway control.

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Bottleneck mitigation through a variable speed limit system using connected vehicles

Cited by 12 publications

References 47 publications

Variable Speed Limit Strategy With Dynamic Control Cycle Based on Predictive Control

Variable Speed Limit Strategy With Dynamic Control Cycle Based on Predictive Control

Evaluating connected vehicle-based weather responsive management strategies using weather-sensitive microscopic simulation

Improving Motorway Mobility and Environmental Performance via Vehicle Trajectory Data-Based Control

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