Over the last twenty years mobility patterns have changed, and the rhythm associated with “métro-boulot-dodo” (metro-work-sleep) has evolved in tandem. Each day is different in terms of uses and mobility, and users’practices and uses must therefore be taken into account as an essential and determining factor. How these link to the time factor is particularly key.

This is a key criterion for understanding the complexity of users’ lifestyle and meeting their expectations while building cities that are sustainable. In a society that has become more complex, the supply-side approach alone is too simplistic and must be revisited by taking into account users’ needs, along with their constraints and expectations, in relation to the resulting daily mobility. It is thus necessary to offer “mobility package services” from which users can choose and find their own solution (car, carpooling, bicycle, public transport, telecommuting).