Abstract

The paper illustrates the potential of fuzzy logic and approximate reasoning in the context of the evaluation of a set of transport projects characterized in terms of multiple environmental factors or impacts. A method involving fragments of imprecise information (conditional propositions, implications), where antecedents are environmental impacts or factors and the consequent is a measure of satisfaction associated with those factors, is illustrated in the context of the evaluation of road projects. Each factor is defined as a fuzzy subset of the set of projects. A simple example is given involving four road projects and six factors (travel-time saved, social impact, flora/fauna impact, noise impact, air quality impact, capital cost).

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