The research is divided into two sections. In sections 1, a review was completed on state-of-no-out literature in the field of transport costs and esternalities.
The aim of the review is two fild:
a) to estimate monetary values and parameters be used in section 2;
b) to enlight the links between different policy options and both interest at stakes and proovelical developments.
In sections 2 a quantitative analysis was completed using a cost-benefit approach to best be impacts of traffic diversion - from road to rail transport - on a wide warge of indicators: congestion, economy, accident and the environment.