This paper develops an empirical model of the relationship between road traffic accidents and traffic flows. The analysis focuses on the accident externality which is mainly determined by the difference between the marginal and average risks. The model is estimated using a new dataset which...

Public-Private Partnerships have become a favoured way of introducing private capital into transport projects whilst maintaining an element of public interest. This paper considers the potential conflicts that might arise between the freedom of the private operator within a PPP and other...