This Plan presents important challenges such as designing a more local, humanised, social urban space for people to enjoy, in a vast metropolis that endures millions of daily journeys and that needs to stay accessible and economically efficient. The specific challenges will be improving the environmental quality of the city and calming traffic while also guaranteeing a certain amount of private vehicle traffic by means of road regulation and organisation. Increasing the operating speed of public transport also represents a challenge, especially outside the M-30 (the orbital motorway circulating central districts of Madrid) and so does improving the efficiency of the distribution of urban goods. But at the same time, city officials say that this Plan offers the opportunity to give space back to the citizens by maximizing the leisurely character of streets and squares, and the opportunity to increase the social and natural capital for citizens of Madrid, who wish to continue evolving and living in a healthy, efficient and comfortable city.