Three main approaches can be used to assess infrastructure performance. The first employs macro-econometric techniques to estimate the impact of the existing infrastructure capital stock on growth and to infer its growth-maximising level. This approach neglects the impact of infrastructure on...

Despite the economic importance of the road transport sector, there is no systematic cross-country evidence on the sector’s efficiency. This paper develops a conceptual framework for analysing the social efficiency of the road transport sector, including non-market inputs – such as travel...

This paper provides a concrete example of how policy analysts can use empirical programme evaluation studies to perform ex-post assessments of environmentally related tax policies. A number of studies credibly identify causal effects of environmentally related tax policies, but do not...