“…In addition, relevant meta-analyses and critical reviews and relevant websites such as that of the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA; www.emcdda.europa.eu) were reviewed for additional relevant publications. This review is an extension of previous review articles [ 15 , 16 ] , including the scholarly review of Strand et al [ 17 ] and includes signifi cant material published later on, including epidemiological and road surveys such as the recent EMCDDA monograph [ 1 ] , publications of Corsenac et al [ 18 ] , Callaghan et al [ 19 ] , Monarrez-Espino et al [ 20 ] , Gomes et al [ 21 ] , Legrand et al [ 22 ] , Dassanayake et al [ 23 ] , Hels et al [ 24 ] and Bukten et al [ 25 ] , among others (see Section "Defi nition of Driving Ability", below), and Pluck et al [ 26 ] and Darke et al [ 27 ] with respect to cognitive function.…”