A link to a wide range of spatio-temporal practices, mobility is nowadays an important factor of social relations. If the spatio-temporal practices and mobility forms are not homogenous, how can we, however, describe them, qualify and make them more comprehensible? The metropolitan area can be a suitable scale to analyse these behaviours, because it results of these mobilities and most of today’s urban mobilities are registered inside this space. This PhD work tends to read Grenoble metropolitan space heterogeneity and its organizations, through the daily mobility analysis. A better knowledge of daily mobilities behaviours and their representation in space and in time are the core topic of this work. The essential motivation is to take into consideration a person in his/her context, i.e. with all particular dimensions of his/her situation. An original approach is to enable to read and to analyse the mobilities and activities, and the occurring disparities, exploring a great quantitative data basis, which is the household trip survey (fr. Enquête ménages déplacements, EMD, conducted in 2002 in the Grenoble urban area). This implies a secondary analysis of data coming from a major local public policies tool, which has not been used so far for daily mobilities' forms analysis.