“…That is why recent years have seen the development of derived importance methods based on CSS (Weinstein, 2000;Cavana et al, 2007;Pakdil and Aydin, 2007;Eboli and Mazzulla, 2007;Joewono and Kubota, 2007;Dell'Olio et al, 2010;Nurul--Habib et al, 2011;Jen et al, 2011) and from stated preference surveys (Hensher and Prioni, 2002;Hensher et al, 2003;Eboli and Mazzulla, 2008a;2008b;Dell'Olio et al, 2011;Cirillo et al, 2011).…”