In France, the obligation to conduct an ex-post assessment is relatively recent (1982) but it has in fact revealed some methodological problems that flow from the retrospective nature of the exercise. This report shows that some of those difficulties can be overcome through the establishment of...

In France, the obligation to conduct an ex-post assessment is relatively recent (1982) but it has in fact revealed some methodological problems that flow from the retrospective nature of the exercise. This report shows that some of those difficulties can be overcome through the establishment of...

This paper presents the results of research recently conducted by the authors on ex-post analysis focused on the long-term economic impacts of transportation system investments in the United States (US). For a variety of reasons, the US has had a tradition of making transport investments to...

China has suffered railway capacity constraints for more than several decades and the need for a large increase in rail capacity has been viewed as the primary challenge. The former Chinese Ministry of Railways believed that building a national wide high speed railway (HSR) network was the most...

The UK National Audit Office (NAO) scrutinises public spending on behalf of Parliament, helping it to hold government departments to account and helping public bodies improve performance and delivery. We publish around 60 value for money studies each year across a range of government activities,...

This paper reviews methods that seek to draw causal inference from non-experimental data and shows how they can be applied to undertake ex-post evaluation of transport interventions. In particular, the paper discusses the underlying principles of techniques for treatment effect estimation with...

This paper reports estimates of the economic impact of HIV/AIDS in the Asian and Pacific region using a standard growth model. Following previous research on this issue, an economywide aggregate production function is estimated with health capital as an input. HIV/AIDS is assumed to influence...

In this paper, we study the effects of institutions and policies on economic growth and poverty, paying close attention to institutions and policies that relate to the overall climate and regulations under which the private sector operates. We find that good governance, as measured by a strong...