This short paper reviews the range of planning issues that are currently being addressed in Britain and considers how the nature of these issues and the ways in which choices are being assessed impact the modeling approaches being adopted, in particular, by the author’s own consultancy practice. The paper briefly outlines current developments in governance and analytical requirements; implications of trends toward more detailed (and more time-consuming) transport modeling; and the role of microsimulation in both research and planning practice. It concludes primarily that the practicality of model operation, particularly in terms of model run times, is of critical importance, and in many cases, determines whether major planning decisions are made on the basis of formal analysis rooted, albeit indirectly, in research, or without such a basis at all. A secondary conclusion relates to the possible use of output from detailed microsimulation models as a basis for calibrating aggregate models.

中文翻译：

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英国的集成建模：集成模型的实用性

这篇简短的文章回顾了英国目前正在解决的计划问题的范围，并考虑了这些问题的性质以及评估选择的方式如何影响所采用的建模方法，特别是作者自己的咨询实践。本文简要概述了治理和分析要求方面的最新发展；趋势对更详细（且更费时）的运输模型的影响；以及微观模拟在研究和计划实践中的作用。它的主要结论是，模型操作的实用性（尤其是在模型运行时间方面）至关重要，并且在许多情况下，这些结果决定了主要的计划决策是基于正式分析（尽管是间接地基于研究）还是基于根本没有这样的基础。