1. Department of Sociology and Communication, Faculty of Social Sciences. Campus de Unamuno, University of Salamanca, Salamanca, Spain
2. Department of Applied Sociology, Faculty of Politics and Sociology. Campus de Somsosaguas, Complutense University of Madrid, Madrid, Spain
3. Transport, Infraestructure, and Territory Research Group (tGIS)—Department of Geography, Complutense University of Madrid, Madrid, Spain
4. Department of Statistics and Operational Research III, Faculty of Statistics, Ciudad Univesritaria, Complutense University of Madrid, Madrid, Spain