called Barcelona Expat Week has been created, gathering assessment of the before/after situation, including key figures, all the essential information required for both permanent would be useful. residents of the city and foreigners living temporarily in Barcelona. Barcelona’s PMU is organized into four main pillars: Safe Mobility, Sustainable Mobility, Fair Mobility, and Zero Emission 2. Mobility City. Those four pillars define the vision of Barcelona’s PMU and include every form of mobility within the city, namely Many smart cities across the world treat mobility as a critical pedestrians, bicycles, public transport, delivery vehicles, and issue. Barcelona copes with significant interconnection private transport. To stay consistent with the other chapters troubles (seashore, ferry hubs, ground transportation). This of this ebook, we will first analyze these aspects of the PMU explains why the city aims to become a carbon-neutral city. before assessing their impact on traffic congestion, based on Barcelona’s Climate Plan 2018-2030 was ambitious, and a Paris the IMD World Competitiveness Center Smart City Index. Agreement-compatible plan was released in April 2018. The city plan sets out Barcelona’s strategy to reduce emissions by 2.1 Adaptation of roads and districts 45 percent on the way to becoming carbon neutral by 2050. Barcelona declared a climate emergency with the aim of Barcelona has 11,314,797 square meters of roads for vehicles reducing inequalities and looking after vulnerable people; this and 9,850,081 square meters of pedestrian thoroughfares such plan for 2050 adds relevant answers to climate change on top as sidewalks (PMU, 2013-2018). In total, the city has around of other priorities. four thousand streets whose combined length is 1,376,430 kilometers. Barcelona City Council has adopted a people- The Barcelona Urban Mobility Plan (PMU, 2013-2018) set first approach in its redesigning of neighborhoods and roads. out the lines of mobility initiatives undertaken by the city in The overall space reserved for pedestrians has increased by recent years. To our knowledge, no updates or recent studies 42 percent, from 75.3 hectares to 107.4 hectares (PMU, 2013- of the Urban Mobility Plan have been produced. An impact 2018). Figure 3.1 – Adaptation of roads, PMU Barcelona Baseline situation Superblock model 400 m 400 m Source: https://www.mobilegeeks.de/artikel/superblocks-so-bekommt-barcelona-die-autos-aus-der-innenstadt/; https://ajuntament.barcelona.cat/superilles/en/ 90 Quélin and Smadja | HEC PARIS | SMART CITIES | The sustainable program of six leading cities | 2021