Author: Richard Larouche
Publisher: Elsevier
ISBN: 0128119322
Category : Transportation
Languages : en
Pages : 308
Book Description
Children's Active Transportation is a rigorous and comprehensive examination of the current research and interventions on active transportation for children and youth. As the travel behaviors of these groups tend to be highly routinized, and their mobility faces unique constraints, such as parental restrictions, mandatory school attendance, and the inability to drive a motor vehicle before late adolescence, this book examines the key factors that influence travel behavior among children and youth, providing key insights into lessons learned from current interventions. Readers will find a resource that clearly demonstrates how critical it is for children to develop strong, active transportation habits that carry into adulthood. - Discusses the correlates that exist between children's active transportation using a social and ecological model - Summarizes active transportation interventions that show what works to increase non-motorized modes of travel in children - Describes the factors that influence the implementation and effectiveness of interventions
Transportation and Behavior
Author: Irwin Altman
Publisher: Springer Science & Business Media
ISBN: 1468440012
Category : Psychology
Languages : en
Pages : 353
Book Description
The present volume in our series, Human Behavior and Environment, is devoted to a specific topic, continuing the pattern established in the last two volumes. The current theme is behavioral science aspects of trans portation. This topic was chosen to exemplify a problem area of practical import to which psychologists, sociologists, and other behavioral and social scientists can make and have been making notable contributions. Our volume includes papers from a variety of psychological perspec tives, including human factors, environmental psychology, and be havior modification, along with other contributions from a sociologist and a transportation engineer interested in behavioral science contribu tions to transportation. Joining us as guest editor for this volume is Peter Everett, an environmental psychologist whose area of specialty is the study of behavioral components of transportation systems. Volume 6 of our series, currently in preparation, will be devoted to behavior and the natural environment. A provisional table of contents for that volume appears on page v. Irwin Altman Joachim F. Wohlwill Peter B. Everett ix Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 1 . . . . . . . . . . . . . . CHAPTER 1 TRANSPORTATION AND THE BEHAVIORAL SCIENCES DAVID T. HARTGEN Introduction 5 Brief Overview of the Behavioral Sciences. . . ..... . .... . . . . .. . . .... . .... . . . . . . ... . . ... . ..... . . 7 Current Transportation Issues: Evolution and Behavioral Applications ........................ 8 Urban Transit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Rural Transit Systems ................................... 12 Transportation for the Mobility-Limited .......... . . . . . . . . . . . . . . . . . . . . . . 15 . . . . . . . . Environmental and Social Impact Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 . . . . . . . . . . . . Energy and Transportation. . . . . . . . . . . . . . . . . . . . . . . 20 . . . . . . . . Summary and Conclusions. . . . . . . . . . . . . . . . . . . . . . . . . 23 . . . . . . . . . . References ................................................. 25 xi Contents xii CHAPTER 2 PSYCHOLOGICAL CONTRIBUTIONS TO TRAVEL DEMAND MODELING IRWIN P. LEVIN JORDAN J. LOUVIERE Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 . . . . . . . . . . . . . .
Publisher: Springer Science & Business Media
ISBN: 1468440012
Category : Psychology
Languages : en
Pages : 353
Book Description
The present volume in our series, Human Behavior and Environment, is devoted to a specific topic, continuing the pattern established in the last two volumes. The current theme is behavioral science aspects of trans portation. This topic was chosen to exemplify a problem area of practical import to which psychologists, sociologists, and other behavioral and social scientists can make and have been making notable contributions. Our volume includes papers from a variety of psychological perspec tives, including human factors, environmental psychology, and be havior modification, along with other contributions from a sociologist and a transportation engineer interested in behavioral science contribu tions to transportation. Joining us as guest editor for this volume is Peter Everett, an environmental psychologist whose area of specialty is the study of behavioral components of transportation systems. Volume 6 of our series, currently in preparation, will be devoted to behavior and the natural environment. A provisional table of contents for that volume appears on page v. Irwin Altman Joachim F. Wohlwill Peter B. Everett ix Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 1 . . . . . . . . . . . . . . CHAPTER 1 TRANSPORTATION AND THE BEHAVIORAL SCIENCES DAVID T. HARTGEN Introduction 5 Brief Overview of the Behavioral Sciences. . . ..... . .... . . . . .. . . .... . .... . . . . . . ... . . ... . ..... . . 7 Current Transportation Issues: Evolution and Behavioral Applications ........................ 8 Urban Transit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Rural Transit Systems ................................... 12 Transportation for the Mobility-Limited .......... . . . . . . . . . . . . . . . . . . . . . . 15 . . . . . . . . Environmental and Social Impact Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 . . . . . . . . . . . . Energy and Transportation. . . . . . . . . . . . . . . . . . . . . . . 20 . . . . . . . . Summary and Conclusions. . . . . . . . . . . . . . . . . . . . . . . . . 23 . . . . . . . . . . References ................................................. 25 xi Contents xii CHAPTER 2 PSYCHOLOGICAL CONTRIBUTIONS TO TRAVEL DEMAND MODELING IRWIN P. LEVIN JORDAN J. LOUVIERE Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 . . . . . . . . . . . . . .
Bicycling for Transportation
Author: Melissa Bopp
Publisher: Elsevier
ISBN: 0128126434
Category : Transportation
Languages : en
Pages : 248
Book Description
Bicycling for Transportation examines the individual and societal factors of active transportation and biking behavior. The book uses an Interdisciplinary approach to provide a comprehensive overview of bicycling for transportation research. It examines the variability in biking participation among different demographic groups and the multiple levels of influence on biking to better inform researchers and practitioners on the effective use of community resources, programming and policymaking. It is an ideal resource for public health professionals trying to encourage physical activity through biking. In addition, it makes the case for new infrastructure that supports these initiatives. - Provides evidence-based insights on cost-effective interventions for improving biking participation - Includes numerous case studies and best practices that highlight multi-level approaches in a variety of settings - Explores individual and social factors related to biking behavior, such as race, gender and self-efficacy
Publisher: Elsevier
ISBN: 0128126434
Category : Transportation
Languages : en
Pages : 248
Book Description
Bicycling for Transportation examines the individual and societal factors of active transportation and biking behavior. The book uses an Interdisciplinary approach to provide a comprehensive overview of bicycling for transportation research. It examines the variability in biking participation among different demographic groups and the multiple levels of influence on biking to better inform researchers and practitioners on the effective use of community resources, programming and policymaking. It is an ideal resource for public health professionals trying to encourage physical activity through biking. In addition, it makes the case for new infrastructure that supports these initiatives. - Provides evidence-based insights on cost-effective interventions for improving biking participation - Includes numerous case studies and best practices that highlight multi-level approaches in a variety of settings - Explores individual and social factors related to biking behavior, such as race, gender and self-efficacy
Pedestrian Behavior
Author: Harry Timmermans
Publisher: Emerald Group Publishing
ISBN: 1848557507
Category : Transportation
Languages : en
Pages : 359
Book Description
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.
Publisher: Emerald Group Publishing
ISBN: 1848557507
Category : Transportation
Languages : en
Pages : 359
Book Description
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.
Mapping the Travel Behavior Genome
Author: Konstadinos G. Goulias
Publisher: Elsevier
ISBN: 0128173408
Category : Transportation
Languages : en
Pages : 734
Book Description
Mapping the Travel Behavior Genome covers the latest research on the biological, motivational, cognitive, situational, and dispositional factors that drive activity-travel behavior. Organized into three sections, Retrospective and Prospective Survey of Travel Behavior Research, New Research Methods and Findings, and Future Research, the chapters of this book provide evidence of progress made in the most recent years in four dimensions of the travel behavior genome. These dimensions are Substantive Problems, Theoretical and Conceptual Frameworks, Behavioral Measurement, and Behavioral Analysis. Including the movement of goods as well as the movement of people, the book shows how traveler values, norms, attitudes, perceptions, emotions, feelings, and constraints lead to observed behavior; how to design efficient infrastructure and services to meet tomorrow's needs for accessibility and mobility; how to assess equity and distributional justice; and how to assess and implement policies for improving sustainability and quality of life. Mapping the Travel Behavior Genome examines the paradigm shift toward more dynamic, user-centric, demand-responsive transport services, including the "sharing economy," mobility as a service, automation, and robotics. This volume provides research directions to answer behavioral questions emerging from these upheavals.
Publisher: Elsevier
ISBN: 0128173408
Category : Transportation
Languages : en
Pages : 734
Book Description
Mapping the Travel Behavior Genome covers the latest research on the biological, motivational, cognitive, situational, and dispositional factors that drive activity-travel behavior. Organized into three sections, Retrospective and Prospective Survey of Travel Behavior Research, New Research Methods and Findings, and Future Research, the chapters of this book provide evidence of progress made in the most recent years in four dimensions of the travel behavior genome. These dimensions are Substantive Problems, Theoretical and Conceptual Frameworks, Behavioral Measurement, and Behavioral Analysis. Including the movement of goods as well as the movement of people, the book shows how traveler values, norms, attitudes, perceptions, emotions, feelings, and constraints lead to observed behavior; how to design efficient infrastructure and services to meet tomorrow's needs for accessibility and mobility; how to assess equity and distributional justice; and how to assess and implement policies for improving sustainability and quality of life. Mapping the Travel Behavior Genome examines the paradigm shift toward more dynamic, user-centric, demand-responsive transport services, including the "sharing economy," mobility as a service, automation, and robotics. This volume provides research directions to answer behavioral questions emerging from these upheavals.
Traffic Safety and Human Behavior
Author: David Shinar
Publisher: Emerald Group Publishing
ISBN: 1787146332
Category : Transportation
Languages : en
Pages : 1262
Book Description
This comprehensive 2nd edition covers the key issues that relate human behavior to traffic safety. In particular it covers the increasing roles that pedestrians and cyclists have in the traffic system; the role of infotainment in driver distraction; and the increasing role of driver assistance systems in changing the driver-vehicle interaction.
Publisher: Emerald Group Publishing
ISBN: 1787146332
Category : Transportation
Languages : en
Pages : 1262
Book Description
This comprehensive 2nd edition covers the key issues that relate human behavior to traffic safety. In particular it covers the increasing roles that pedestrians and cyclists have in the traffic system; the role of infotainment in driver distraction; and the increasing role of driver assistance systems in changing the driver-vehicle interaction.
The Evolving Impacts of ICT on Activities and Travel Behavior
Author:
Publisher: Academic Press
ISBN: 0128162139
Category : Law
Languages : en
Pages : 352
Book Description
The Evolving Impacts of ICT on Activities and Travel Behavior, Volume Three in the Advances in Transport Policy and Planning series, assesses both successful and unsuccessful practices and policies from around the world on the topic. This new volume highlights ICT as a Resilient Travel Behavior Alternative; The Past, Present and Future of Travel Time Use; The Intersection of Transportation and Telecommunications in Demand Forecasting and Traffic Management; International Journey Planning System to Welcoming MaaS; An Empirical Analysis of the Relationship Between Mobile Internet Usage and Activity-Travel Behavior; Travel Time Perception and Time Use in an Era of Automated Driving, and more.
Publisher: Academic Press
ISBN: 0128162139
Category : Law
Languages : en
Pages : 352
Book Description
The Evolving Impacts of ICT on Activities and Travel Behavior, Volume Three in the Advances in Transport Policy and Planning series, assesses both successful and unsuccessful practices and policies from around the world on the topic. This new volume highlights ICT as a Resilient Travel Behavior Alternative; The Past, Present and Future of Travel Time Use; The Intersection of Transportation and Telecommunications in Demand Forecasting and Traffic Management; International Journey Planning System to Welcoming MaaS; An Empirical Analysis of the Relationship Between Mobile Internet Usage and Activity-Travel Behavior; Travel Time Perception and Time Use in an Era of Automated Driving, and more.
Urban Mobility and the Smartphone
Author: Anne Aguilera
Publisher: Elsevier
ISBN: 0128126485
Category : Transportation
Languages : en
Pages : 224
Book Description
Urban Mobility and the Smartphone: Transportation, Travel Behavior and Public Policy provides a global synthesis of the transformation of urban mobility by the smartphone, clarifying the definitions of new concepts and objects in mobility studies, accounting for the changes in transportation and travel behavior triggered by the spread of the smartphone, and discussing the implications of these changes for policy-making and research. Urban mobility is approached here as a system of actors: the perspectives of individual behavior (including lifestyles), the supply of mobility services (including actors, business models), and public policy-making are considered. The book is based on an extensive review of the academic literature as well as systematic observation of the development of smartphone-based mobility services around the world. In addition, case studies provide practical illustrations of the ongoing transformation of mobility services influenced by the dissemination of smartphones. The book not only consolidates existing research, but also picks up on weak signals that help researchers and practitioners anticipate future changes in urban mobility systems. Key Features • Synthesizes existing research into one reference, providing researchers and policy-makers with a clear and complete understanding of the changes triggered by the spread of the smartphone. • Analyzes numerous case studies throughout developed and developing countries providing practical illustrations of the influence of the smartphone on travel behavior, transportation systems, and policy-making. • Provides insights for researchers and practitioners looking to engage with the "smart cities" and "smart mobility" discourse. - Synthesizes existing research into one reference, providing researchers and policy-makers with a clear and complete understanding of the changes triggered by the spread of the smartphone - Analyzes numerous case studies throughout developed and developing countries providing practical illustrations of the influence of the smartphone on travel behavior, transportation systems, and policy-making - Provides insights for researchers and practitioners looking to engage with the "smart cities" and "smart mobility" discourse
Publisher: Elsevier
ISBN: 0128126485
Category : Transportation
Languages : en
Pages : 224
Book Description
Urban Mobility and the Smartphone: Transportation, Travel Behavior and Public Policy provides a global synthesis of the transformation of urban mobility by the smartphone, clarifying the definitions of new concepts and objects in mobility studies, accounting for the changes in transportation and travel behavior triggered by the spread of the smartphone, and discussing the implications of these changes for policy-making and research. Urban mobility is approached here as a system of actors: the perspectives of individual behavior (including lifestyles), the supply of mobility services (including actors, business models), and public policy-making are considered. The book is based on an extensive review of the academic literature as well as systematic observation of the development of smartphone-based mobility services around the world. In addition, case studies provide practical illustrations of the ongoing transformation of mobility services influenced by the dissemination of smartphones. The book not only consolidates existing research, but also picks up on weak signals that help researchers and practitioners anticipate future changes in urban mobility systems. Key Features • Synthesizes existing research into one reference, providing researchers and policy-makers with a clear and complete understanding of the changes triggered by the spread of the smartphone. • Analyzes numerous case studies throughout developed and developing countries providing practical illustrations of the influence of the smartphone on travel behavior, transportation systems, and policy-making. • Provides insights for researchers and practitioners looking to engage with the "smart cities" and "smart mobility" discourse. - Synthesizes existing research into one reference, providing researchers and policy-makers with a clear and complete understanding of the changes triggered by the spread of the smartphone - Analyzes numerous case studies throughout developed and developing countries providing practical illustrations of the influence of the smartphone on travel behavior, transportation systems, and policy-making - Provides insights for researchers and practitioners looking to engage with the "smart cities" and "smart mobility" discourse
Fostering Sustainable Behavior
Author: Doug McKenzie-Mohr
Publisher: New Society Publishers
ISBN: 1550924621
Category : Business & Economics
Languages : en
Pages : 184
Book Description
The highly acclaimed manual for changing everyday habits-now in an all-newthird edition! We are consuming resources and polluting our environment at a rate that is outstripping our planet's ability to support us. To create a sustainable future, we must not only change our own actions, we must educate and encourage those around us to change theirs. If one individual recycles his plastic containers, the impact is minimal. But if an entire community recycles, enormous amounts of resources are saved. How then do we go about transforming people's good intentions into action? Fostering Sustainable Behavior explains how the field of community-based social marketing has emerged as an effective tool for encouraging positive social change. This completely revised and updated third edition contains a wealth of new research, behavior change tools, and case studies. Learn how to: target unsustainable behaviors, and identify the barriers to change understand various commitment strategies communicate effective messages enhance motivation and invite participation. The strategies introduced in this ground-breaking manual are an invaluable resource for anyone interested in promoting sustainable behavior, including environmental conservation, recycling and waste reduction, water and energyefficiency and alternative transportation.
Publisher: New Society Publishers
ISBN: 1550924621
Category : Business & Economics
Languages : en
Pages : 184
Book Description
The highly acclaimed manual for changing everyday habits-now in an all-newthird edition! We are consuming resources and polluting our environment at a rate that is outstripping our planet's ability to support us. To create a sustainable future, we must not only change our own actions, we must educate and encourage those around us to change theirs. If one individual recycles his plastic containers, the impact is minimal. But if an entire community recycles, enormous amounts of resources are saved. How then do we go about transforming people's good intentions into action? Fostering Sustainable Behavior explains how the field of community-based social marketing has emerged as an effective tool for encouraging positive social change. This completely revised and updated third edition contains a wealth of new research, behavior change tools, and case studies. Learn how to: target unsustainable behaviors, and identify the barriers to change understand various commitment strategies communicate effective messages enhance motivation and invite participation. The strategies introduced in this ground-breaking manual are an invaluable resource for anyone interested in promoting sustainable behavior, including environmental conservation, recycling and waste reduction, water and energyefficiency and alternative transportation.
The Multi-Agent Transport Simulation MATSim
Author: Andreas Horni
Publisher: Ubiquity Press
ISBN: 190918876X
Category : Technology & Engineering
Languages : en
Pages : 620
Book Description
The MATSim (Multi-Agent Transport Simulation) software project was started around 2006 with the goal of generating traffic and congestion patterns by following individual synthetic travelers through their daily or weekly activity programme. It has since then evolved from a collection of stand-alone C++ programs to an integrated Java-based framework which is publicly hosted, open-source available, automatically regression tested. It is currently used by about 40 groups throughout the world. This book takes stock of the current status. The first part of the book gives an introduction to the most important concepts, with the intention of enabling a potential user to set up and run basic simulations. The second part of the book describes how the basic functionality can be extended, for example by adding schedule-based public transit, electric or autonomous cars, paratransit, or within-day replanning. For each extension, the text provides pointers to the additional documentation and to the code base. It is also discussed how people with appropriate Java programming skills can write their own extensions, and plug them into the MATSim core. The project has started from the basic idea that traffic is a consequence of human behavior, and thus humans and their behavior should be the starting point of all modelling, and with the intuition that when simulations with 100 million particles are possible in computational physics, then behavior-oriented simulations with 10 million travelers should be possible in travel behavior research. The initial implementations thus combined concepts from computational physics and complex adaptive systems with concepts from travel behavior research. The third part of the book looks at theoretical concepts that are able to describe important aspects of the simulation system; for example, under certain conditions the code becomes a Monte Carlo engine sampling from a discrete choice model. Another important aspect is the interpretation of the MATSim score as utility in the microeconomic sense, opening up a connection to benefit cost analysis. Finally, the book collects use cases as they have been undertaken with MATSim. All current users of MATSim were invited to submit their work, and many followed with sometimes crisp and short and sometimes longer contributions, always with pointers to additional references. We hope that the book will become an invitation to explore, to build and to extend agent-based modeling of travel behavior from the stable and well tested core of MATSim documented here.
Publisher: Ubiquity Press
ISBN: 190918876X
Category : Technology & Engineering
Languages : en
Pages : 620
Book Description
The MATSim (Multi-Agent Transport Simulation) software project was started around 2006 with the goal of generating traffic and congestion patterns by following individual synthetic travelers through their daily or weekly activity programme. It has since then evolved from a collection of stand-alone C++ programs to an integrated Java-based framework which is publicly hosted, open-source available, automatically regression tested. It is currently used by about 40 groups throughout the world. This book takes stock of the current status. The first part of the book gives an introduction to the most important concepts, with the intention of enabling a potential user to set up and run basic simulations. The second part of the book describes how the basic functionality can be extended, for example by adding schedule-based public transit, electric or autonomous cars, paratransit, or within-day replanning. For each extension, the text provides pointers to the additional documentation and to the code base. It is also discussed how people with appropriate Java programming skills can write their own extensions, and plug them into the MATSim core. The project has started from the basic idea that traffic is a consequence of human behavior, and thus humans and their behavior should be the starting point of all modelling, and with the intuition that when simulations with 100 million particles are possible in computational physics, then behavior-oriented simulations with 10 million travelers should be possible in travel behavior research. The initial implementations thus combined concepts from computational physics and complex adaptive systems with concepts from travel behavior research. The third part of the book looks at theoretical concepts that are able to describe important aspects of the simulation system; for example, under certain conditions the code becomes a Monte Carlo engine sampling from a discrete choice model. Another important aspect is the interpretation of the MATSim score as utility in the microeconomic sense, opening up a connection to benefit cost analysis. Finally, the book collects use cases as they have been undertaken with MATSim. All current users of MATSim were invited to submit their work, and many followed with sometimes crisp and short and sometimes longer contributions, always with pointers to additional references. We hope that the book will become an invitation to explore, to build and to extend agent-based modeling of travel behavior from the stable and well tested core of MATSim documented here.
Discrete Choice Analysis
Author: Moshe E. Ben-Akiva
Publisher: MIT Press
ISBN: 9780262022170
Category : Architecture
Languages : en
Pages : 424
Book Description
Discrete Choice Analysis presents these results in such a way that they are fully accessible to the range of students and professionals who are involved in modelling demand and consumer behavior in general or specifically in transportation - whether from the point of view of the design of transit systems, urban and transport economics, public policy, operations research, or systems management and planning. The methods of discrete choice analysis and their applications in the modelling of transportation systems constitute a comparatively new field that has largely evolved over the past 15 years. Since its inception, however, the field has developed rapidly, and this is the first text and reference work to cover the material systematically, bringing together the scattered and often inaccessible results for graduate students and professionals. Discrete Choice Analysis presents these results in such a way that they are fully accessible to the range of students and professionals who are involved in modelling demand and consumer behavior in general or specifically in transportation - whether from the point of view of the design of transit systems, urban and transport economics, public policy, operations research, or systems management and planning. The introductory chapter presents the background of discrete choice analysis and context of transportation demand forecasting. Subsequent chapters cover, among other topics, the theories of individual choice behavior, binary and multinomial choice models, aggregate forecasting techniques, estimation methods, tests used in the process of model development, sampling theory, the nested-logit model, and systems of models. Discrete Choice Analysis is ninth in the MIT Press Series in Transportation Studies, edited by Marvin Manheim.
Publisher: MIT Press
ISBN: 9780262022170
Category : Architecture
Languages : en
Pages : 424
Book Description
Discrete Choice Analysis presents these results in such a way that they are fully accessible to the range of students and professionals who are involved in modelling demand and consumer behavior in general or specifically in transportation - whether from the point of view of the design of transit systems, urban and transport economics, public policy, operations research, or systems management and planning. The methods of discrete choice analysis and their applications in the modelling of transportation systems constitute a comparatively new field that has largely evolved over the past 15 years. Since its inception, however, the field has developed rapidly, and this is the first text and reference work to cover the material systematically, bringing together the scattered and often inaccessible results for graduate students and professionals. Discrete Choice Analysis presents these results in such a way that they are fully accessible to the range of students and professionals who are involved in modelling demand and consumer behavior in general or specifically in transportation - whether from the point of view of the design of transit systems, urban and transport economics, public policy, operations research, or systems management and planning. The introductory chapter presents the background of discrete choice analysis and context of transportation demand forecasting. Subsequent chapters cover, among other topics, the theories of individual choice behavior, binary and multinomial choice models, aggregate forecasting techniques, estimation methods, tests used in the process of model development, sampling theory, the nested-logit model, and systems of models. Discrete Choice Analysis is ninth in the MIT Press Series in Transportation Studies, edited by Marvin Manheim.