As pointed out from some analysis about Italian urban mobility and its environmental management, in the complexity of the actual analysis a shadow exists always: the demand view, the citizen’s preferences. The methodology presented tries to answer this last problem and tries to introduce a new element: the reconstruction of a general urban mobility description, searching to reply to some questions as: How much important is the cycle mobility? How does the citizen determine the right means of transport? How much important in the choose of transport means is the activity localization in the city?