“…Three cities in the above list from three different continents (Freiburg, Curitiba and Singapore) have been of particular interest to sustainable transport researchers, generating the following single-city journal articles: on Freiburg (FitzRoy and Ryan and Throgmorton, 2003;Buehler and Pucher, 2011;Kronsell, 2013;and Freytag et al, 2014); on Curitiba (Rabinovitch, 1996;Smith and Raemakers, 1998;Taniguchi, 2001;Duarte et al, 2011;Khayesi and Amekudzi, 2011;Miranda and de Silva, 2012;Macedo, 2013;and Mercier et al, 2015); and on Singapore (Willoughby, 2001;May, 2004;Lam and Toan, 2006;Richmond, 2008;Han, 2010;and Haque et al, 2013).…”