Draft proposal from the informal working group on Additional Sound Emission Provision to clarify the current text pursuant to the first group session. The intention is to submit a final document as a formal proposal to the 65th GRB session.

Draft presentation on the amendments developed by the informal working group on Additional Sound Emission Provisions.

Updated version of document GRB/2017/2 pursuant to discussions during the 2nd ASEP II informal group session.

OICA proposal to provide a clearer and more precise definition for “stable acceleration”. The definition introduced in document GRB/2017/02 is specified as "when the acceleration from line AA’ to PP’ has a low variation to the acceleration from line PP’ to BB’.” The term “low variation” is imprecise and so OICA proposes the wording “when the acceleration ratio a_{(PP’-BB’)}/a_{(AA’-BB’)} is lower than 1,2.”

Presentation updated to include revisions to the working document GRB/2017/2 as agreed during the 2nd ASEP II informal group session to be presented during GRB-65 as an informal document amending the draft Supplement 2 to the 03 series of amendments to UN R51.

Explanation of the proposals contained in documents GRB/2017/2 and GRB-65-26.

ASEP II informal group amendments to document GRB/2017/2. See document GRB-65-25 for additional explanations.

Proposal of extensive clarifications to UN R51 by the Informal Group on Additional Sound Emission Provisions (ASEP) in order to provide more consistent and unambiguous specifications for test procedures. Explanations of the proposed changes are provided in document GRB-65-25.