A well-known principle of welfare economics states that an efficient resources allocation can be achieved in a competitive economy when market prices are in line with social marginal costs. When applied to the transport sector, this implies that the price of the various transport modes should be...

An integrated assessment model is used to simulate the introduction of various emissions trading schemes based on the Kyoto protocol on the reduction of greenhouse emissions. The implications of the various systems in terms of income distribution are illustrated, and it is claimed that the issue...

Markets for transport are often characterised by unequal demand in both directions: every morning during peak hours the trains are crowded while moving towards the direction of large cities, whereas they may be almost empty in the other direction. In this paper we discuss the implications of...

This paper analyses some of the economic issues involved in the diffusion of modern intermodal technologies and the impact of intermodality on the functions performed by nodes in transportation networks. Two simple economic models are presented: the first considers why an intermodal transport...

The carbon emissions abatement, undertaken by some countries, may induce other countries to increase their own emissions. This effect, known as "carbon leakage", may be due to rather different mechanisms. The simplest case is when outside countries do not change their environmental policies and...

A model of two-sided market (for credit cards) is introduced and discussed. In this model, agents can join none, one, or more than one platform (multihoming), depending on access prices and the choices made by agents on the opposite market side. Although emerging multihoming patterns are,...

This paper considers the technical aspects and the consequences, in terms of simulation results and policy assessment, of introducing imperfect competition in a CGE model. The modifications to the standard CGE framework needed to model imperfect competition in some industries are briefly...