ABSTRACT
Transport policy faces, at the beginning of the twenty-first century, an unresolved dilemma: how to reconcile an apparently unstoppable growth of passenger and freight traffic with its undesirable harmful effects, both socially and environmentally. The concept of sustainable mobility has been proposed as a solution to this dilemma, but it struggles to become an operational concept. Policy makers are thus faced with a complex decision, as there is an urgent need to reconcile economic development and environmental protection, while considering different social priorities and distributional consequences (Akerman et al., 2000).
