Forecasting Urban Travel
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Forecasting Urban Travel

Past, Present and Future

David E. Boyce and Huw C.W.L. Williams

Forecasting Urban Travel presents in a non-mathematical way the evolution of methods, models and theories underpinning travel forecasts and policy analysis, from the early urban transportation studies of the 1950s to current applications throughout the urbanized world. From original documents, correspondence and interviews, especially from the United States and the United Kingdom, the authors seek to capture the spirit and problems faced in different eras, as changing information requirements, computing technology and planning objectives conditioned the nature of forecasts.
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Chapter 10: Computing environment and travel forecasting software

David E. Boyce and Huw C.W.L. Williams


This chapter addresses the evolution of computer programs used for travel forecasting from the packages, batteries or suites developed for mainframe computers from the late 1950s to the 1980s to the modern software systems designed for personal computers. The review emphasises the software systems developed for solving the traditional four-step, or sequential, travel forecasting procedure. These systems came into use during the 1980s and are now the primary ‘toolkits’ used in practice to solve a range of models; to some extent they are also used in research. Software for supporting analysis and parameter estimation was sometimes incorporated into these systems. By and large, this supporting software is not considered here, but is reviewed in the chapters where those methods are described.

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