La géométrie fractale. Un nouvel outil pour évaluer le rôle de la morphologie des réseaux de transport public dans l'organisation spatiale des agglomérations

The fragmentation of the urban patterns is actually a largely discussed topic in urban planning. In particular the consumption of space and the traffic flows generated are considered as most negative impacts of this development. However, for many reasons it doesn’t seem possible to find simple solutions to manage this evolution. The mobility has changed the way of life of the agents and the experience shows that planning concepts, which don’t tend to take into account such desires, risk to fail. In the present paper we focus on the question if alternative geometric concepts, based on fractal geometry, provide an instrument to reflect about spatial patterns which allow to respect simultaneou…

Impacts of Road Networks on urban mobility

International audience

LA GEOMETRIE FRACTALE - UN NOUVEL OUTIL POUR EVALUER LE ROLE DE LA MORPHOLOGIE DES RESEAUX DE TRANSPORT PUBLIC DANS L'ORGANISATION SPATIALE DES AGGLOMERATIONS

National audience

Impacts des réseaux viaires sur les mobilités urbaines : quelques illustrations

This research aims to find the impact of the network shape and structure on the urban mobilities, in order to fight against the automobile dependency and to include the externalities in the network design. Three examples illustrate this objective. The first one shows the influence of the network shape on the pedestrian urban flows. The second one emphasizes how sensitive to the network structure is the efficiency of a very flexible Demand Responsive Transport. The third example demonstrates that the network metric is favourable to the automobile and how it can be possible to apply an alternative metric, called the “slow metric” to reduce the urban sprawling and the automobile dependency.

Mise à jour du Schéma d'Aménagement à l'horizon 2005

Structures urbaines, offre de transport et comportement de mobilité

National audience