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Vehicular mobility patterns and their applications to Internet-of-Vehicles: a comprehensive survey

2015 5th International Conference on Computer Sciences and Automation Engineering(ICCSAE 2015)

作者： Changbo Wang Yan Jiang Na Liu Hubei University of Medicine

With the acceleration of industrialization and urbanization in China, the development of the city is increasingly becoming saturated. There is no doubt that the city’s economic development and people’s travel life have brought a lot of pressure on the urban road traffic. Many research focus on the optimization of traffic flow in cities. Considering the accident, vehicles can avoid congestion point and change behavior, such as moving path of accidents before the vehicle driving rules in BML model was improved, closer to that of the actual vehicle driving behavior. On the basis of the improved model, the density of road network traffic flow must be respectively, the accident point number changes impact on the average speed of traffic flow;Accident number must be, a road network traffic flow density changes impact on the average speed of traffic flow;Accidents before the vehicle transition probability at each lattice point impact on the average speed of traffic flow;The vehicle before the accident point transfer probability distribution function of each lattice point is different effect the running state of the system simulation research on the four questions such as, the analysis of simulation results, a series of meaningful conclusions.

关键词： traffic flow Swarm optimization BML

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Science China(Information Sciences) 2022年第11期65卷 5-46页

作者： Qimei CUI Xingxing HU Wei NI Xiaofeng TAO Ping ZHANG Tao CHEN Kwang-Cheng CHEN Martin HAENGGI School of Information and Communication Engineering Beijing University of Posts and Telecommunications Department of Broadband Communication Peng Cheng Laboratory China Mobile Research Institute Digital Productivity and Services Flagship Commonwealth Scientific and Industrial Research Organization (CSIRO) VTT Technical Research Center of Finland Department of Electrical Engineering University of South Florida Department of Electrical Engineering University of Notre Dame

With the growing popularity of the Internet-of-Vehicles(IoV), it is of pressing necessity to understand transportation traffic patterns and their impact on wireless network designs and operations. Vehicular mobility patterns and traffic models are the keys to assisting a wide range of analyses and simulations in these applications. This study surveys the status quo of vehicular mobility models, with a focus on recent advances in the last decade. To provide a comprehensive and systematic review, the study first puts forth a requirement-model-application framework in the IoV or general communication and transportation networks. Existing vehicular mobility models are categorized into vehicular distribution, vehicular traffic, and driving behavior models. Such categorization has a particular emphasis on the random patterns of vehicles in space, traffic flow models aligned to road maps, and individuals’ driving behaviors(e.g., lane-changing and car-following). The different categories of the models are applied to various application scenarios, including underlying network connectivity analysis, off-line network optimization, online network functionality, and real-time autonomous driving. Finally, several important research opportunities arise and deserve continuing research efforts, such as holistic designs of deep learning platforms which take the model parameters of vehicular mobility as input features, qualification of vehicular mobility models in terms of representativeness and completeness, and new hybrid models incorporating different categories of vehicular mobility models to improve the representativeness and completeness.

关键词： vehicular mobility pattern Internet-of-Vehicles (IoV) traffic flow spatial point process trajectory prediction machine learning deep learning

THE RIEMANN PROBLEM WITH DELTA INITIAL DATA FOR THE NON-ISENTROPIC IMPROVED AW-RASCLE-ZHANG MODEL

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Acta Mathematica Scientia 2023年第1期43卷 237-258页

作者：蒋伟峰陈停停李彤王振 College of Science Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang ProvinceChina Jiliang UniversityHangzhou310018China School of Mathematics and Physics China University of GeosciencesWuhan430074China Department of Mathematics The University of IowaIowaIA52246USA Center for Mathematical Sciences and Department of Mathematics Wuhan University of TechnologyWuhan430070China

In this paper,we study the Radon measure initial value problem for the nonisentropic improved Aw-Rascle-Zhang model.For arbitrary convex F(u)in this model we construct the Riemann solutions by elementary waves andδ-shock waves using the method of generalized characteristic analysis.We obtain the solutions constructively for initial data containing the Dirac measure by taking the limit of the solutions for that with three piecewise constants.Moreover,we analyze different kinds of wave interactions,including the interactions of theδ-shock waves with elementary waves.

关键词： Riemann problem non-isentropic improved Aw-Rascle-Zhang model δ-shock wave wave interactions traffic flow

Continuum modeling of freeway traffic flows:State-of-the-art,challenges and future directions in the era of connected and automated vehicles

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Communications in Transportation Research 2023年第1期3卷 187-211页

作者： Saeed Mohammadian Zuduo Zheng Md.Mazharul Haque Ashish Bhaskar School of Civil and Environmental Engineering Queensland University of TechnologyBrisbane4000Australia School of Civil Engineering The University of QueenslandBrisbane4072Australia

Connected and automated vehicles(CAVs)are expected to reshape traffic flow dynamics and present new challenges and opportunities for traffic flow modeling.While numerous studies have proposed optimal modeling and control strategies for CAVs with various objectives(e.g.,traffic efficiency and safety),there are uncertainties about the flow dynamics of CAVs in real-world traffic.The uncertainties are especially amplified for mixed traffic flows,consisting of CAVs and human-driven vehicles,where the implications can be significant from the continuum-modeling perspective,which aims to capture macroscopic traffic flow dynamics based on hyperbolic systems of partial differential equations.This paper aims to highlight and discuss some essential problems in continuum modeling of real-world freeway traffic flows in the era of CAVs.We first provide a select review of some existing continuum models for conventional human-driven traffic as well as the recent attempts for incorporating CAVs into the continuum-modeling framework.Wherever applicable,we provide new insights about the properties of existing models and revisit their implications for traffic flows of CAVs using recent empirical observations with CAVs and the previous discussions and debates in the literature.The paper then discusses some major problems inherent to continuum modeling of real-world(mixed)CAV traffic flows modeling by distinguishing between two major research directions:(a)modeling for explaining purposes,where making reproducible inferences about the physical aspects of macroscopic properties is of the primary interest,and(b)modeling for practical purposes,in which the focus is on the reliable predictions for operation and control.The paper proposes some potential solutions in each research direction and recommends some future research topics.

关键词： Continuum model Macroscopic traffic flow model traffic flow Connected and automated vehicles Autonomous vehicles Automated vehicles

Modeling and Analyzing for a Novel Continuum Model Considering Self-Stabilizing Control on Curved Road with Slope

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Computer Modeling in Engineering & Sciences 2022年第6期131卷 1815-1830页

作者： Li Lei Zihao Wang Yong Wu School of Energy and Power Engineering Shandong UniversityJinan250061China School of Control Science and Engineering Shandong UniversityJinan250061China Department of Logistics Management Ningbo University of Finance and EconomicsNingbo315175China

It is essential to fully understand master the traffic characteristics of the self-stabilizing control effect and roadcharacteristics to ensure the regular operation of transportation. traffic flow on curved roads and slopes is irregularand more complicated than that on the straight road. However, most of the research only considers the effect ofself-stabilizing in the straight road. This study attempts to bridge this deficiency from the following three aspects.First, we review the potential influencing factors of traffic flow stability, which are related to the vehicle’s steadyvelocity, history velocity, and the turn radius of the road and the slope of the road. Based on the above review,an extended continuum model accounting for the self-stabilizing effect on a curved road with slope is proposed.Second, the linear stability criterion of the new model is derived by applying linear stability theory, and the neutralstability curve is obtained in detail. The modified KdV equation describing the evolution characteristics of trafficcongestion is derived by using the nonlinear analysis method. Upon the theoretical analysis, the third aspectfocuses on simulating the self-stabilizing effect under different slopes and radius, which demonstrates that theself-stabilizing effect is conducive to reducing congestion of the curved road with slope.

关键词： traffic flow KdV equation self-stabilizing effect gradient highway curved road

On the modeling of synchronized flow in cellular automaton models

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Chinese Physics B 2014年第2期23卷 320-326页

作者：金诚杰王炜姜锐 School of Transportation Southeast University of China School of Engineering Science University of Science and Technology of China

In this paper, we further analyze our cellular automaton （CA） traffic flow model. By changing some parameters, the characteristics of our model can be significantly varied, ranging from the features of phase transitions to the number of traffic phases. We also review the other CA models based on Kerner＇s three-phase traffic theory. By comparisons, we find that the core concepts for modeling the synchronized flow in these models are similar. Our model can be a good candidate for modeling the synchronized flow, since there is enough flexibility in our framework.

关键词： traffic flow cellular automaton synchronized flow three-phase traffic theory

flow difference effect in the lattice hydrodynamic model

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Chinese Physics B 2010年第4期19卷 31-36页

作者：田钧方贾斌李新刚高自友 MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology Beijing Jiaotong University

In this paper, a new lattice hydrodynamic model based on Nagatani＇s model INagatani T 1998 Physica A 261 5991 is presented by introducing the flow difference effect. The stability condition for the new model is obtained by using the linear stability theory. The result shows that considering the flow difference effect leads to stabilization of the system compared with the original lattice hydrodynamic model. The jamming transitions among the freely moving phase, the coexisting phase, and the uniform congested phase are studied by nonlinear analysis. The modified KdV equation near the critical point is derived to describe the traffic jam, and kink -antikink soliton solutions related to the traffic density waves are obtained. The simulation results are consistent with the theoretical analysis for the new model.

关键词： lattice hydrodynamic model traffic flow flow difference

flow difference effect in the two-lane lattice hydrodynamic model

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Chinese Physics B 2012年第7期21卷 207-215页

作者：王涛高自友赵小梅田钧方张文义 College of Automation and Electronic Engineering Qingdao University of Science and Technology MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology Beijing Jiaotong University

By introducing a flow difference effect, a modified lattice two-lane traffic flow model is proposed, which is proved to be capable of improving the stability of traffic flow. Both the linear stability condition and the kink-antikink solution derived from the modified Korteweg-de Vries （mKdV） equation are analyzed. Numerical simulations verify the theoretical analysis. Futhermore, the evolution laws under different disturbances in the metastable region are studied.

关键词： traffic flow flow difference lattice hydrodynamic model modified Korteweg-de VriesKdV equation

Instantaneous information propagation in free flow,synchronized flow,stop-and-go waves in a cellular automaton model

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Chinese Physics B 2008年第3期17卷 829-835页

作者：姜锐金文龙吴清松 School of Engineering Science University of Science and Technology of China Department of Automation University of Science and Technology of China

Recently, a number of efforts are underway to investigate inter-vehicle communications （IVC）. This paper studies the instantaneous information propagation behaviours based on IVC in three different tragic situations （free flow, synchronized flow and stop-and-go waves） in a cellular automaton model. It is shown that different behaviours appear in stop-and-go waves from those in free flow and synchronized flow. While the distribution of Multi-hop Communication Distance （MhCD） is either exponential or uniform in free flow and synchronized flow, the distribution of MhCD is either exponential or with a single peak in stop-and-go waves.

关键词： traffic flow inter-vehicle communications cellular automaton model