Evaluation of Externalities in Transport Projects

TL;DRAbstract

The purpose of this paper is to illustrate the variety of issues and methods used to treat different types of externalities in transportation projects and to ask how these different approaches and values can affect project evaluation and ranking. Of special interest is the question whether the elimination of externalities and different procedures favor one type of transportation investment over the other, and specifically rail projects versus highway projects. To this point the paper mostly poses the questions with a focus on issues where bias can result. The paper is based on a study conducted for the Ministry of National Infrastructure in Israel to improve the evaluation procedure of transportation projects in order to better account for externalities. This paper focuses on two main issues. First, we recommend approaches and methods of evaluation for different transport externalities, including the value of time savings. These evaluations are based on the international literature on

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