Technological developments and environmental concerns are among several reasons that are bringing up once again the concept of new air transportation vehicles like the airships. Nowadays airships have several applications such as: heavy cargo and point-to-point transportation, advertising,...

Plans for the development of high speed railways lines (HSR) in Spain are widespread. At the beginning of 2010 four HSR lines were operating in routes where the air transport mode used to be dominant. In this paper we examine through econometric means the air carriers' reaction to these HSR...

This paper estimates the effects of airports on economic growth in US metropolitan areas. The estimation uses a novel technique to identify the effects of changes in local airport sizes from overall changes in the air travel network. Airport size is found to have a positive effect on local...