International audienceMobility, a growing trend in contemporary urban societies, also helps reinforce social inequality. This observation has in recent years led to public policies that tend to improve access to urban mobility, which concerns both changing place of residence and commuting. These policies, which have been applied in North America and several European countries, are based on the same postulate: segregation goes hand in hand with unequal access to mobility and this results in spatial and social confinement for those caught in this situation. This confinement makes it difficult to find work and to participate in social networks that are effective in terms of integration into society. This article discusses this postulate with r...