Empirical applications of the translog cost function often conclude that firms operate at increasing returns to scale. From the viewpoint of economic theory, this does not make sense. We demonstrate that empirical cost functions ignore the fact that differences in firm output depends on cost...

This paper investigates the strategic position of four European airports in the aviation network by means of a generalised cost function. We compare the performance of the hub airports London, Paris, Frankfurt, and Amsterdam. Our analysis entails flights from smaller European airports via these...

Empirical applications of the translog cost function often conclude that firms operate at increasing returns to scale. From the viewpoint of economic theory, this does not make sense. We demonstrate that empirical cost functions ignore the fact that differences in firm output depends on cost...

This paper investigates the strategic position of four European airports in the aviation network by means of a generalised cost function. We compare the performance of the hub airports London, Paris, Frankfurt, and Amsterdam. Our analysis entails flights from smaller European airports via these...

The quality of transport networks does not only depend on the quality of the individual links and nodes, but also on the way these nodes and links function in the context of (multimodal) networks. In the present paper we focus on multimodal trips where the railways are the main transport mode....

This paper aims to trace the consequences of various global scenarios for the transportation system and the environment. After a review and the identification of four new world scenario’s, the implications for sustainable transport are mapped out. The methodology is illustrated by means of a...

Electric cars may significantly contribute to a reduction in external costs of urban transport; their introduction is however fraught with difficulties. This paper investigates by means of a scenario analysis which conditions have to be fulfilled for a successful introduction in the city of...

In urban areas underground logistical systems - designed as delivery service to provide shops, industrial sites and office locations - may help to relieve the pressure of the road network in particular in the old inner cities which have to deal with increasing traffic congestion. When shops are...