Cette thèse traite de la congestion des transports en milieu urbain, et des liens qu'elle entretient avec les localisations des emplois et des ménages. Elle est organisée en trois parties. La première est une analyse bibliographique sur les questions de croissance et de structure urbaine, suivie d'une analyse, de nature systémique, de la congestion des transports. La deuxième partie est consacrée à l'analyse des manifestations spatiales de la congestion en Île-de-France, en s'appuyant notamment sur différentes méthode d'agrégation spatiale d'indicateurs de congestion. Enfin, dans la troisième partie, un modèle d'équilibre urbain décrivant la localisation des ménages par rapport à leur emploi, en présence de congestion, est développé, et utilisé pour analyser le rôle de la dispersion des emplois sur l'étalement urbain / This thesis deals with transport congestion in urban areas, and with the links between it and the locations of jobs and households. It is organized in three parts. The first one is a literature revue on the questions of urban growth and structure, followed by an analysis of congestion in transport systems. The second part is dedicated to the analysis of the spatial expressions of congestion in the Greater Paris Region, based notably on different spatial aggregation methods of congestion indicators. Finally, in the third part, I develop an urban equilibrium model describing the locations of households with respect to their workplace. This model is then used to analyse the role played by job dispersion on urban sprawl

Public transit is a key method for increasing sustainability in the transportation sector; transit can decrease emissions harmful to the environment and increase social equity by providing improved mobility. Given the limited resources available to build and operate public transit, it makes sense to meet multiple sustainability goals simultaneously. Transit that is accessible by non-motorized means and serves multiple trip types can potentially reduce vehicle usage and increase mobility for everyone. This research assesses whether transit systems with high non-motorized access rates and non-work trip usage are meeting social and environmental goals and what factors impact non-work and non-motorized access rates. Eight criteria were used to choose 17 metropolitan regions that represent a range of transit conditions in the US. Non-parametric correlations were calculated between non-work usage and non-motorized access and a dataset of 30 continuous and 11 categorical variables that measure regional characteristics, transit efficiency, land use, rider demographics, and transit operations and design. In-depth case studies, including site visits and interviews, were done for Denver, Colorado; Minneapolis/St. Paul, Minnesota; and Sacramento, California. The correlations and case studies both confirm that transit system with high non-work usage and non-motorized access are not meeting social or environmental sustainability goals. These systems primarily serve low-income riders, are less well funded, and provide limited service. Only systems with higher per capita funding levels meet social goals and higher funding is correlated to higher income riders. However, having higher income riders does not imply that social goals are met. Regional policies regarding operations and design of transit can increase usage for non-work trips and non-motorized access and are necessary to ensure both social and environmental goals are met.

Le concept du Management de la Mobilité agit dans la perspective d’optimiser l’usage de l’offre alternative de mobilité existante et de la développer en créant les conditions favorables d’un changement de culture et de pratiques en matière de déplacements. Notre contribution à travers cette recherche a pour ambition d’éclaircir les bases de débat sur la pertinence des approches du Management de la Mobilité en les examinant de près. Il s’agit de cerner l’efficacité de ces approches, leur fonctionnement, ainsi que leurs apports et leurs limites.Partant de l'hypothèse que les pistes qui mènent à l'objectif de concrétisation d'une mobilité plus durable afin d'atteindre le « facteur 4 » sont multiples, notre démarche repose sur l'analyse de plusieurs terrains de recherche où on tentera de vérifier la pertinence et l'efficacité de l'approche du Management de la Mobilité à travers deux voies possibles de régulation des mobilités quotidiennes.Une première voie que nous l'appelons la « voie corrective » où Il s'agit d'influencer les choix individuels et même plus, des modes de vie entiers par la mise en route des processus de changement à travers des mesures incitatives. Une deuxième voie indissociable de la première, car elle accroit son efficacité et sa pérennité, est plutôt une « voie intégrative ». Pour explorer cette voie, notre recherche nécessite un travail de nature exploratoire pour déterminer les pré-conditions de réalisation du transfert modal afin d’augmenter le potentiel d'usage et la crédibilité des modes alternatifs. Ceci serait possible par l’anticipation des besoins de la mobilité à travers l’intégration du Management de la Mobilité dans le processus de planification urbaine. / The concept of Mobility Management aims to optimize the use of available and alternative mobility modes by providing and creating optimal conditions for travel patterns change. Our contribution through this research is to provide basis for discussion on the relevance of mobility management approaches by analysing them in depth. The research consists in clarifying the effectiveness of these approaches, the way they are implemented, their benefits and limits.Assuming that the ways to lead to more sustainable mobility and achieve the national target of reduction by a factor of four greenhouse gas emissions by 2050 are various, our strategy is based on the investigation of several research fields where we will attempt to validate the adequacy and the effectiveness of mobility management approaches through two assumed ways of mobility regulation. A first way, that we’ve called the « corrective way », consists in influencing individual travel choices by enacting behaviour change processes and implementing incentives measures. A second way which is inseparable from the first, because it increases its long term efficiency, is rather an « integrative way ». It requires for our research an exploratory method to set out pre-conditions for achieving modal shift and increasing potential use and credibility of alternative modes. This could be possible by anticipating travel demand through an integration of mobility management measures into urban planning process.