The city of Ljubljana took advantage of the European Mobility Week in 2013 to start a four-month temporary closure of the central Slovenska Street for all motorised vehicles. This was a step towards transforming the urban space into a new public pedestrian street, which is only accessible by public transport, cycling and walking. It includes new urban furnishing and green space. Four months later, at the end of January 2014, the CO2 level had dropped by 70%, improving the quality of life, air quality and level of noise. Based on the positive results and feedback from the general public, Ljubljana made the closure permanent in September 2015.