À propos de la vitesse généralisée des transports. Un concept d’Ivan Illich revisité*

Héran Frédéric

Revue d'économie régionale et urbaine, 2012, vol. 2009, issue 03, 449-470

Abstract: The effective speed of transport takes into account not only travel time but also working time required to pay the travel. Suggested more than 30 years ago, this concept is always presented as a radical critique of the car, since this view a motorist would be much less quickly as a cyclist. This article first recalls the limits of such reasoning, then express the determinants of effective speed, then shows that motorists are now higher than cyclists and especially this analysis does not call into question the interest of increase indefinitely speed as postulates without sufficient basis the standard economic calculation. To present a more coherent reasoning, it is finally suggested to take into account the negative external impacts of speed in effective speed in order to determine optimal speed.

Date: 2012
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