This article studies the effects of informal, non-monetary sanctions, such as warnings, which are often used as an enforcement instrument by environmental inspection agencies. In cases of uncertainty with respect to the measured emissions due to measurement errors or accidental violations, some...

Starting from the fundamental principles of transport pricing the paper discusses the relative merits of a number of policy measures. It is argued that in the short to medium run the discouragement of the purchase of new diesel cars is the most important environmental measure that can be taken....

This article introduces the contributions of this special issue on modelling of urban road pricing and its implementation. The issue focuses on the design of urban road pricing schemes, and their spatial and temporal impacts, using quantitative transport (and land use) models. The policy...

In this paper we study the problem of a city with access to two subcentres selling a differentiated product. The first subcentre has low free flow transport costs but is easily congested (near city centre, access by road). The second one has higher free flow transport costs but is less prone to...

This paper analyses the current Flemish afforestation policy and shows that this policy is likely to be non-optimal and can be improved. An important step in improving the afforestation policy in Flanders is the selection of the optimal location of a cluster of new forests as a whole. The...

We build a structural model to understand the fine set in court, which is described as the outcome of a two-stage game between defendant, public prosecutor and judge. The equilibrium fine depends on the harm caused, the costs to society and the probalility that the quilty party is punished. This...

This paper analyses two challenges in the reform of urban transport pricing. The first challenge is the construction of an optimal package of urban transport pricing instruments assuming one benevolent government level that maximizes overall welfare. We examine the welfare gains from...

In this paper we study the taxation of car ownership, car use and public transport in the presence of externalities within the framework of a discrete/continuous choice model. We first derive optimal taxes in a simplified setting, emphasizing the specific role of fixed car ownership taxes and...

The partial equilibrium model PRIMES-transport has been used for the evaluation of different transport policy measures which are on the table at EU or national level. The model covers the transport activity by transport mode and their associated energy consumption and air pollution in the EU,...