There is currently a great deal of interest in and discussion of the concept of sustainable transportation. A large number of factors, such as global warming, the Kyoto agreement, increased frequency and severity of poor air quality, that have provided the impetus for this increased interest. The scope of both discussions and research have, up to the present, focussed primarily on developing macroscopic measures of performance (or indicators) that are useful for application to regional areas. While these indicators are helpful for broad policy level evaluations, they are not always suitable for network and project level application. Consequently, transportation professionals and politicians at the municipal level have few, if any, tools available that enable them to quantitatively and objectively include sustainability when prioritising potential transportation projects. This paper addresses this issue. Specifically, this paper presents several sustainability measures of performance and presents a framework within which these indicators can be used to evaluate potential transportation projects. The proposed method is illustrated using a sample transportation project.
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