Authors: P Sykes Published: 26 Aug 2011


Transport planners and policy makers design transport schemes with a design life of many decades. Their plans have to be robust under changing circumstances in an uncertain future bought about by the pressure of local and global economic, political and cultural changes, technological developments and environmental concerns. The first stage, in attempting to manage uncertainty in transport planning, is first to describe where it occurs and to define levels of severity. Various researchers have attempted to produce a description of uncertainty with some commenting that the term uncertainty itself seems to be ambiguous. This paper consolidates the various taxonomies into one that is appropriate to a transport planning project and discusses one method of managing uncertainty across all stages of the design.
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