Recent advances in the scientific understanding of urban traffic congestion have only strengthened the already solid case for congestion charges as an element of a successful urban transport policy. But examples of real-world congestion charging systems remain few and far between. What can be...

Cost-benefit analysis (CBA) is indispensable for making good decisions on what transport projects to fund. It essentially aims to figure out which projects offer the best value for money. However, the practical relevance of CBA does not always live up to its appeal in principle. One problem is...