“…Many different sources of air pollution have been investigated as causes of adverse health effects. These include, among others, municipal waste incinerators (Goria et al, 2009), residential heating (Junninen et al, 2009) and especially wood smoke (Karr et al, 2009;Naeher et al, 2007), local point sources (Karr et al, 2009) and even desert sand (Perez et al, 2008;Sandstrom & Forsberg, 2008;Shinn et al, 2003). But more than any other sources road transport has been linked to adverse health effects (Adar and Kaufman, 2007;Fan et al, 2009;Brunekreef et al, 2009;Rosenlund et al, 2009;Migliore et al, 2009;Hart et al, 2009;Delfino et al, 2009;Aguilera et al, 2009;Perez et al, 2009a;Perez et al, 2009b;Kramer et al, 2009;Kunzli et al, 2009;Tonne et al, 2009;Ranft et al, 2009;Pedersen et al, 2009;Ryan et al, 2009;Eisner et al, 2009;Gent et al, 2009;Ho et al, 2010).…”