A wide range of books on urban systems models are available today for the student of urban planning, geography, and economics. There are few, if any, books, however, that deal with integrated urban systems modeling from the operational viewpoint. The term "integrated" is used here in the same sense as the "general equilibrium", in contrast to such approaches as "sequential" or "partial equilibrium". In fact, the main thesis of this book is that the characteristics of ur ban activity that best distinguish it from rural activity are (1) the intensive use of urban land and (2) urban congestion. On this basis, models that are introduced in this book are three- dimensional in character and produce urban land use configurations with explicit optimal density of urban pro duction activities along with optimal levels of transportation congestion. It is also assumed that both public and private sectors play significant roles in shaping urban forms, structures, and functions in mixed economic systems. From this viewpoint, models developed in this book address two integrated decision-making procedures: one by the public sector, which provides urban infrastructure and public services, and the other one by the private sector, which uses provided infrastructure and public services in pursuing parochial interests.

Following on from Integrated Models Volume 1: Policy Analysis of Transportation and Lane Use (Routledge Library Editions, 2006), this book bridges the gap between the scholars and the practitioners of transportation and land-use modelling. First published in 1991, chapters discuss model-calibration and model-solution problems, describe a series of numerical and policy analyses, and propose potential directions for location and land-use research. This reissue will be of particular value to undergraduate and postgraduate geography students with an interest in integrated urban modelling; in particular, the research conducted in the field over the past two decades.

Transportation Engineering and Planning is a component of Encyclopedia of Physical Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Transportation Engineering and Planning presents the readers with diverse sources of information and knowledge about transportation engineering and planning, to help ensure that informed actions are compatible with sustainable world development. It begins with a historical analysis of transportation development, since an understanding of how transportation technologies developed is a prerequisite for understanding issues involved in transportation systems, and for developing sound policy analysis. Next, the various chapters analyze transportation problems, discusses the state of public policy addressing those problems, considers the causes and effects of changes in demand for mobility as the socio-economic environment changes, and then deals with the fundamental questions related to transportation. These two volumes are aimed at the following a wide spectrum of audiences from the merely curious to those seeking in-depth knowledge: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, managers, and decision makers and NGOs.

This volume is the result of an international collaboration, which started with a conference at Smadalaro Gfrrd in Sweden. The workshop was supported by the National Science Foundation of the USA (INT-9215114) and by the Swedish National Road Administration, the Swedish Council for Building Research, the Swedish Transport and Communications Research Board and the Swedish Council for Planning and Coordination of Research. This support is gratefully acknow ledged. The collaboration started as a bilateral u.S.-Swedish endeavour but was soon widened to other scholars in Europe, Asia, Australia and South-America. Network Infrastructure and the Urban Environment is a policy area of growing importance. Sustainable cities and sustainable transport systems are necessary for attaining a sustainable development. The research and policy field, represented in this volume, comprises a number of challenging contrasts: - the contrast between infrastructure investments, mobility and environmental sustainability; - the contrast between policy contexts, modelling traditions and available decision support systems in various parts of the world; - the contrast between available best practice methods and the majority of models applied in planning; the contrast between static models of cross-sectionary equilibria and dynamic models of disequilibrium adjustments; and the contrast between state-of-the-art operationalland-use/transport models and new demands for land-use/transportlenvironment models due to changing policy contexts. Bridging some of these gaps constitutes important research tasks, that are discussed in the twenty-two chapters of this book. A number of emerging research directions are identified in the introduction and summary chapter.

Transportation research has traditionally been dominated by engineering and logistics research approaches. This book integrates social, economic, and behavioral sciences into the transportation field. As its title indicates, emphasis is on socioeconomic changes, which increasingly govern the development of the transportation sector. The papers presented here originated at a conference on Social Change and Sustainable Transport held at the University of California at Berkeley in March 1999, under the auspices of the European Science Foundation and the National Science Foundation. The contributors, who represent a range of disciplines, including geography and regional science, economics, political science, sociology, and psychology, come from twelve different countries. Their subjects cover the consequences of environmentally sustainable transportation vs. the "business-as-usual" status quo, the new phenomenon of "edge cities," automobile dependence as a social problem, the influence of leisure or discretionary travel and of company cars, the problems of freight transport, the future of railroads in Europe, the imposition of electronic road tolls, potential transport benefits of e-commerce, and the electric car.

The connections between economics, planning, and the environment are receiv ing increased attention among scholars and policy makers in many countries. The common denominator among these three variables is the earth's life support sys tems, the ecosystems on which the world depends. When we describe our physi cal surroundings as a collection of possible uses, we are establishing linkages between economics, planning, and the environment. Because possible alternative uses compete with each other, and conflicts arise over scarce land resources, the varying environmental impacts of alternative uses are major concerns for the cur rent as well as the next generation. How to achieve sustainable development is the pressing question for today's environmental professionals. Environmental planners and engineers help us study the implications of our choices, and new technologies and techniques that improve the practice of environmental planning should enhance our ability to protect our future. The depletion of the earth's natural resources and loss of biodiversity, the deg radation of air, land, and water quality, the accumulation of greenhouse gases leading to changes in our climate, and the depletion of the ozone layer comprise only a partial list of environmental issues that concern our policy makers. To sup port their decisions, environmental planning must be a multidimensional and multidisciplinary activity that incorporates social, economic, political, geograph ical, and technical factors. Solutions for problems in these areas frequently re quire not only numerical analyses but also heuristic analyses, which in turn depend on the intuitive judgements of planners and engineers.