ECE/TRANS/WP.29/GRE/80, paras. 11, 12, 20 and 28, based on ECE/TRANS/WP.29/GRE/2018/36, ECE/TRANS/WP.29/GRE/2018/33, ECE/TRANS/WP.29/GRE/2018/42 as amended by Annex III, ECE/TRANS/WP.29/GRE/2018/50