Spain is a secular parliamentary democracy and a constitutional monarchy with a land area of 505,992 km2 (195,365 sq mi) and a population of 47.2 million people. Sustainable Urban Mobility Plans (SUMPs, Planes de Movilidad Urbana Sostenible - PMUS) in Spain are not mandatory, except in the region of Cataluña. There are some regions that have adopted Mobility Guidelines (not mandatory), such as Cataluña, Andalucia and the Basque Country. The Municipality of Madrid Mobility and Transport department has also produced guidelines.