Over the last 20 years, demand for air passenger transport has grown dramatically. At the same time, the two largest domestic airlines merged and several smaller entrants exited without being able to make significant inroads. As a result, the industry is highly concentrated, with a dominant firm...

Estimating the specific effects of a complete reform of the public transit system of a large city is a difficult task due to the confounding effects that will usually mask the impact of interest. In this study we estimate the impact of the complete reform of the public transport system in...