At its 124th session, the Working Party briefly considered such a study, as contained in document ECE/TRANS/WP.30/2010/1.
À sa cent vingt-quatrième session, le Groupe de travail a brièvement examiné l &apos; étude en question, telle qu &apos; elle figure dans le document ECE/TRANS/WP.30/2010/1.