After 50 years of heavy investment in a road network of large infrastructure that has boosted the country's growth, we have reached a point where the road system is no longer efficient. We need to realise that the growth of the road network as a whole fails to solve the exponential demand of private vehicles, that mobility based on private vehicles seriously increases the levels of air pollution and the infrastructure network fragments the territory truncating environmental connections and social relationships.

The metropolitan area contains different urban fabrics with diverse features and needs, which require specific solutions to improve the accessibility to public transport and reduce the demand for private vehicles.

To guarantee a metropolitan model of sustainable mobility, public transport has to play a main role. Throughout the territory, accessibility to public transport must be ensured, exclusive spaces should be adapted for a new bus network, bus frequencies should be improved and fares should be reviewed.

The main challenge of the PDU in relation to mobility is to reverse the model: change from a model in which private transport was the most important planning element to a model where pedestrian spaces are a priority. Public transport has an efficient network that supplies the whole territory while private vehicles reduce the occupation and usage of public space.