Working draft (pursuant to the third informal working group session of 6 May 2014) of proposed amendments to UN R51, based on the consolidated version of the regulation through the 02 series of amendments, in order to align its provisions with the latest EU noise requirements.

Working draft (pursuant to the third session of the Informal Working Group on UN Regulations Nos. 51 and 59) of the 02 series of amendments to UN R59 intended to align its provisions with the latest EU sound level requirements.