Download or read book Modeling Behavior in Vehicular and Pedestrian Traffic Flow written by Michael J. Markowski and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation investigates the design and analysis of vehicular and pedestrian models. A type of vehicular model is developed both to offer novel contributions to vehicle behavior modeling as well as to use as a tool to learn how to create an even more complex behavioral model of pedestrian movement. First, the current state of modeling is investigated including purely behavioral studies and engineering modeling techniques. Behavioral studies are drawn largely from the field of urban affairs and planning while engineering modeling methods are drawn from civil engineering, mathematics, and computer science. Second, a model of vehicular traffic is constructed by first implementing existing work in software. Existing work focuses on single lane traffic, so we next extend the model to support lane changing in multiple lanes. The new mathematical rules are implemented in software and effects of lane changing then studied. The model contributes new capabilities to the field and provides experience to next create a more complex pedestrian model. Third, an algorithmic model of pedestrian movement is created. At its simplest level, steering rules are used that are drawn from the literature. New rules and models are created to support groups and simple social interaction. Learning and memory are then modeled so that simulated pedestrians are human-like in ways that have an effect on congestion. Fourth, software is developed that implements the model. While the model offers a means, i.e., function parameters, for calibration, an implementation must exist to take advantage of that. The software is designed using an object-oriented approach in conjunction with agent based modeling. A pedestrian is an object and agent, learns, has memory, follows its schedule, and moves in, affects and is affected by its environment, and explores the environment. Results from the calibrated software show that the model produces reliable results for situations where the modeled behavior is typical. Contributions to transportation engineering include the vehicular and especially the pedestrian model. Proof of concept software implementation shows the utility of the models and how they can be used to ease and improve design of vehicular and pedestrian areas.

Download or read book Pedestrian Behavior written by Harry Timmermans and published by Emerald Group Publishing. This book was released on 2009-11-19 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of pedestrian behaviour have gained attention in a variety of disciplines. Different technologies have been used to collect data about pedestrian movement patterns. This book aims to document these developments in research and modelling approaches. It includes modelling approaches such as cellular automata models and fluid dynamics.

Download or read book Behavior Analysis and Modeling of Traffic Participants written by Xiaolin Song and published by Springer Nature. This book was released on 2022-06-01 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: A road traffic participant is a person who directly participates in road traffic, such as vehicle drivers, passengers, pedestrians, or cyclists, however, traffic accidents cause numerous property losses, bodily injuries, and even deaths to them. To bring down the rate of traffic fatalities, the development of the intelligent vehicle is a much-valued technology nowadays. It is of great significance to the decision making and planning of a vehicle if the pedestrians' intentions and future trajectories, as well as those of surrounding vehicles, could be predicted, all in an effort to increase driving safety. Based on the image sequence collected by onboard monocular cameras, we use the Long Short-Term Memory (LSTM) based network with an enhanced attention mechanism to realize the intention and trajectory prediction of pedestrians and surrounding vehicles. However, although the fully automatic driving era still seems far away, human drivers are still a crucial part of the road‒driver‒vehicle system under current circumstances, even dealing with low levels of automatic driving vehicles. Considering that more than 90 percent of fatal traffic accidents were caused by human errors, thus it is meaningful to recognize the secondary task while driving, as well as the driving style recognition, to develop a more personalized advanced driver assistance system (ADAS) or intelligent vehicle. We use the graph convolutional networks for spatial feature reasoning and the LSTM networks with the attention mechanism for temporal motion feature learning within the image sequence to realize the driving secondary-task recognition. Moreover, aggressive drivers are more likely to be involved in traffic accidents, and the driving risk level of drivers could be affected by many potential factors, such as demographics and personality traits. Thus, we will focus on the driving style classification for the longitudinal car-following scenario. Also, based on the Structural Equation Model (SEM) and Strategic Highway Research Program 2 (SHRP 2) naturalistic driving database, the relationships among drivers' demographic characteristics, sensation seeking, risk perception, and risky driving behaviors are fully discussed. Results and conclusions from this short book are expected to offer potential guidance and benefits for promoting the development of intelligent vehicle technology and driving safety.

Download or read book A DDDAS Based Multi Scale Framework for Pedestrian Behavior Modeling and Interactions with Drivers written by Hui Xi and published by . This book was released on 2013 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multi-scale agent-based simulation framework is firstly proposed to analyze pedestrian delays at signalized crosswalks in large urban areas under different conditions. The aggregated-level model runs under normal conditions, where each crosswalk is represented as an agent. Pedestrian counts collected near crosswalks are utilized to derive the binary choice probability from a utility maximization model. The derived probability function is utilized based on the extended Adam's model to estimate an average pedestrian delay with corresponding traffic flow rate and traffic light control at each crosswalk. When abnormality is detected, the detailed-level model with each pedestrian as an agent is running in the affected subareas. Pedestrian decision-making under abnormal conditions, physical movement, and crowd congestion are considered in the detailed-level model. The detailed-level model contains two sub-level models: the tactical sub-level model for pedestrian route choice and the operational sub-level model for pedestrian physical interactions. The tactical sub-level model is based on Extended Decision Field Theory (EDFT) to represent the psychological preferences of pedestrians with respect to different route choice options during their deliberation process after evaluating current surroundings. At the operational sub-level model, physical interactions among pedestrians and consequent congestions are represented using a Cellular Automata model, in which pedestrians are allowed biased random-walking without back step towards their destination that has been given by the tactical sub-level model. In addition, Dynamic-Data-Driven Application Systems (DDDAS) architecture has been integrated with the proposed multi-scale simulation framework for an abnormality detection and appropriate fidelity selection (between the aggregate level and the detailed level models) during the simulation execution process. Various experiments have been conducted under varying conditions with the scenario of a Chicago Loop area to demonstrate the advantage of the proposed framework, balancing between computational efficiency and model accuracy. In addition to the signalized intersections, pedestrian crossing behavior under unsignalized conditions which has been recognized as a main reason for pedestrian-vehicle crashes has also been analyzed in this dissertation. To this end, an agent-based model is proposed to mimic pedestrian crossing behavior together with drivers' yielding behavior in the midblock crossing scenario. In particular, pedestrian-vehicle interaction is first modeled as a Two-player Pareto game which develops evaluation of strategies from two aspects, delay and risk, for each agent (i.e. pedestrian and driver). The evaluations are then used by Extended Decision Field Theory to mimic decision making of each agent based on his/her aggressiveness and physical capabilities. A base car-following algorithm from NGSIM is employed to represent vehicles' physical movement and execution of drivers' decisions. A midblock segment of a typical arterial in the Tucson area is adopted to illustrate the proposed model, and the model for the considered scenario has been implemented in AnyLogic® simulation software. Using the constructed simulation, experiments have been conducted to analyze different behaviors of pedestrians and drivers and the mutual impact upon each other, i.e. average pedestrian delay resulted from different crossing behaviors (aggressive vs. conservative), and average braking distance which is affected by driving aggressiveness and drivers' awareness of pedestrians. The results look interesting and are believed to be useful for improvement of pedestrians' safety during their midblock crossing. To the best of our knowledge, the proposed multi-scale modeling framework for pedestrians and drivers is one of the first efforts to estimate pedestrian delays in an urban area with adaptive resolution based on demand and accuracy requirement, as well as to address pedestrian-vehicle interactions under unsignalized conditions.

Download or read book Pedestrian and Vehicle Traffic Modelling written by LV Wei and published by Eliva Press. This book was released on 2023-07-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As two core elements of traffic system, pedestrian and vehicle have always been the focus of research on traffic flow dynamics, and modelling research of them is also one of the important means to explore basic traffic flow, which is helpful to provide scientific guiding principles for the formulation of traffic and crowd evacuation programs under the disaster environment. The theme of the book is to present the basic method of modelling vehicle and pedestrian dynamics on the basis of classical traffic theory and model. The contents mainly include four parts: In the part of vehicle traffic flow modelling, models based on basic car-following and lane-changing behaviour are introduced. In the part of pedestrian traffic flow modelling, pedestrian models that can realistically and accurately reflect characteristics or rules of pedestrian flow are developed. In the part of vehicle-pedestrian mixed traffic flow modelling, an improved KKW model and a pedestrian motion model considering TTC is proposed, in which the spatial motion of a vehicle and a pedestrian is uniformly updated horizontally and longitudinally. In the part of related application, some evacuation models and methods are involved. It is hoped that this book could provide a reference for scholars in the relevant research field. Modelling vehicle and pedestrian movement is of great scientific significance for analyzing and optimizing the evacuation strategies for people in the disaster environment, which also can provide rich and reliable core model library support for the development of traffic software. It is hoped that this book could provide a reference for relevant scholars.

Download or read book Traffic Flow Theory and Characteristics 2012 written by and published by . This book was released on 2012 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's Transportation Research Record: Journal of the Transportation Research Board, No. 2316 consists of 15 papers that explore gap acceptance behavior; driving behavior in emergency situations; driver anticipation; phase transition models; integrated lane change models; models for pedestrian-vehicle interactions at road crossings; midblock pedestrian crossings; exit choice decisions during pedestrian evacuations of buildings; pedestrian movements in crowded networks; congestion effects on risk by experienced drivers; shared car, bicycle, and pedestrian zones; and numerical analysis for adaptive traffic simulation."--publ. info.

Download or read book Traffic Flow Theory and Characteristics 2012 Driver Behavior Pedestrian and Simulation Modeling written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Interactions among Pedestrians and Cars in Shared Spaces written by Fatema Tuj Johora and published by Springer Nature. This book was released on 2022-07-21 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, a novel agent-based, realistic, and general motion model of pedestrians and (human-driven) vehicles is proposed. It can capture a large variety of interactions and be utilized to assess the applicability of different shared space schemes and in the advent of autonomous vehicles. Sustainable urban traffic and transport is a key to successful future development of our society. Urban traffic is predicted to increase further, and the lack of traffic space makes it undesirable to maintain today's strict separation of different modalities. Shared space design principles promote a flexible use of traffic infrastructure by enabling different traffic modalities to share the same space with few or no explicit regulations. Simulation technologies are becoming an essential tool for traffic planners and managers to analyze future urban areas before new concepts and technologies are applied on the road. The proposed simulation model can suitably replicate the motion behaviors of pedestrians and vehicles from new environments with incremental integration of new behaviors and calibrating model parameters.

Download or read book Modeling the Driver s Behavior on Second order Macroscopic Models of Vehicular Traffic Flow written by I. Bonzani and published by . This book was released on 2004 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper deals with the modeling and qualitative analysis, with special attention to hyperbolicity analysis, of a large class of second-order hydrodynamic traffic flow models. These models are obtained from conservation equations for mass and momentum properly closed by constitutive relations related to the modeling of the behaviour of drivers in the flow.

Download or read book Modelling Passenger Flows in Public Transport Facilities written by Winnie Daamen and published by Delft University Press. This book was released on 2004 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is a Ph.D. thesis. Until the early seventies of the last century, pedestrian traffic has hardly been subject of research. About that time, researchers started studying pedestrian behavior more intensively, first by watching and deriving (simple) theories and models from what they observed techniques became available, computers became faster and could handle larger and more complicated models, the number of available pedestrian models as well as their application scope and accuracy increased significantly. Contents include: Introduction, User requirements of a pedestrian flow simulation tool, State-of-the-art pedestrian flow theory, Laboratory experiments on pedestrian walking behavior, Identification of processes and elements in a pedestrian flow model, models for pedestrian behavior in public transport facilities, Implementation of a pedestrian flow simulation model, Verification and validation of SimPed, Case studies with SimPed, Conclusions, Bibliography: SimPed input and output, Set up and test of the laboratory experiments, Dynamic quality of the route choice model, Comparison of SimPed walking model with traffic flow theory and shock-wave theory, Data collection for validation of SimPed."

Download or read book Traffic and Granular Flow 22 written by K. Ramachandra Rao (Associate professor in civil engineering) and published by Springer Nature. This book was released on 2024 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers contributions on a variety of flowing collective systems. While primarily focusing on pedestrian dynamics, it also reflects the latest developments in areas such as vehicular traffic and granular flows and addresses related emerging topics such as self-propelled particles, data transport, swarm behaviour, intercellular transport, and individual interactions to complex systems. Combining fundamental research and practical applications in the various fields discussed, the book offers a valuable asset for researchers and professionals in areas such as civil and transportation engineering, mechanical engineering, electrical engineering, physics, computer science, and mathematics.

Download or read book Mathematical Modeling of Collective Behavior in Socio Economic and Life Sciences written by Giovanni Naldi and published by Springer Science & Business Media. This book was released on 2010-08-12 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using examples from finance and modern warfare to the flocking of birds and the swarming of bacteria, the collected research in this volume demonstrates the common methodological approaches and tools for modeling and simulating collective behavior. The topics presented point toward new and challenging frontiers of applied mathematics, making the volume a useful reference text for applied mathematicians, physicists, biologists, and economists involved in the modeling of socio-economic systems.

Download or read book Transport Simulation written by Edward Chung and published by CRC Press. This book was released on 2019-05-07 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the transport simulation of large road networks has become far more rapid and detailed, and many exciting developments in this field have emerged. Within this volume, the authors describe the simulation of automobile, pedestrian, and rail traffic coupled to new applications, such as the embedding of traffic simulation into driving simulators, to give a more realistic environment of driver behavior surrounding the subject vehicle. New approaches to traffic simulation are described, including the hybrid mesoscopic-microscopic model and floor-field agent-based simulation. Written by an invited panel of experts, this book addresses students, engineers, and scholars, as well as anyone who needs a state-of-the-art overview of transport simulation today.

Download or read book Modeling Stochastic Human driver Car Following Behavior in Oscillatory Traffic Conditions written by Raphael Stern and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurately modeling the realistic and unstable traffic dynamics of human-driven traffic flow is crucial to being able to understand how traffic dynamics evolve, and how new agents such as autonomous vehicles might influence traffic flow stability. This work is motivated by a recent dataset that allows us to calibrate accurate models, specifically in conditions when traffic waves arise. Three microscopic car-following models are calibrated using a microscopic vehicle trajectory dataset that is collected with the intent of capturing oscillatory driving conditions. For each model, five traffic flow metrics are constructed to compare the flow-level characteristics of the simulated traffic with experimental data.

Download or read book Macroscopic Models for Vehicular Flows and Crowd Dynamics Theory and Applications written by Massimiliano Daniele Rosini and published by Springer. This book was released on 2013-03-15 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph presents a systematic treatment of the theory for hyperbolic conservation laws and their applications to vehicular traffics and crowd dynamics. In the first part of the book, the author presents very basic considerations and gradually introduces the mathematical tools necessary to describe and understand the mathematical models developed in the following parts focusing on vehicular and pedestrian traffic. The book is a self-contained valuable resource for advanced courses in mathematical modeling, physics and civil engineering. A number of examples and figures facilitate a better understanding of the underlying concepts and motivations for the students. Important new techniques are presented, in particular the wave front tracking algorithm, the operator splitting approach, the non-classical theory of conservation laws and the constrained problems. This book is the first to present a comprehensive account of these fundamental new mathematical advances.

Download or read book Pedestrian Planning and Design written by John J. Fruin and published by . This book was released on 1987 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling and Simulation Support for System of Systems Engineering Applications written by Larry B. Rainey and published by John Wiley & Sons. This book was released on 2015-02-09 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: “...a much-needed handbook with contributions from well-chosen practitioners. A primary accomplishment is to provide guidance for those involved in modeling and simulation in support of Systems of Systems development, more particularly guidance that draws on well-conceived academic research to define concepts and terms, that identifies primary challenges for developers, and that suggests fruitful approaches grounded in theory and successful examples.” Paul Davis, The RAND Corporation Modeling and Simulation Support for System of Systems Engineering Applications provides a comprehensive overview of the underlying theory, methods, and solutions in modeling and simulation support for system of systems engineering. Highlighting plentiful multidisciplinary applications of modeling and simulation, the book uniquely addresses the criteria and challenges found within the field. Beginning with a foundation of concepts, terms, and categories, a theoretical and generalized approach to system of systems engineering is introduced, and real-world applications via case studies and examples are presented. A unified approach is maintained in an effort to understand the complexity of a single system as well as the context among other proximate systems. In addition, the book features: Cutting edge coverage of modeling and simulation within the field of system of systems, including transportation, system health management, space mission analysis, systems engineering methodology, and energy State-of-the-art advances within multiple domains to instantiate theoretic insights, applicable methods, and lessons learned from real-world applications of modeling and simulation The challenges of system of systems engineering using a systematic and holistic approach Key concepts, terms, and activities to provide a comprehensive, unified, and concise representation of the field A collection of chapters written by over 40 recognized international experts from academia, government, and industry A research agenda derived from the contribution of experts that guides scholars and researchers towards open questions Modeling and Simulation Support for System of Systems Engineering Applications is an ideal reference and resource for academics and practitioners in operations research, engineering, statistics, mathematics, modeling and simulation, and computer science. The book is also an excellent course book for graduate and PhD-level courses in modeling and simulation, engineering, and computer science.