Passengers valuate frequency in air travel positively because it enhances their chances of arriving at their desired time. The valuation of frequency is therefore related to the time of arrival of flights. We develop a framework to link frequency and time of arrival. We use data from a stated...

The Herfindahl-Hirschman index (HHI) is a well known concentration measure, which is both widely used and widely criticized. The main shortcoming of the HHI is its sensitivity for the relevant market definition, in terms of both geographical boundaries and in terms of product homogeneity. In...

This paper studies the relationship between reliability (proxied by punctuality) and productivity in passenger railroad services. Increasing reliability may lower productivity, as it requires inputs, that can’t be used to produce outputs. The relationship between reliability and productivity...