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Proposal for draft amendments to Regulation No. 51 - 03 series
Document GRB-55-04
2 February 2012

Proposal for changes to the definitions of vehicle type (adding tire dimensions), ‘pre-acceleration’, and reference points (para. 2.11) and to the Annex 10 test procedures for medium to heavy vehicles.

Submitted by China
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Previous Documents, Discussions, and Outcomes
3. (b) New sound limit values

8. The expert from China introduced GRB-55-05-Rev.1 proposing amendments (GRB-55-04) aimed at revising the definitions of the “pre-acceleration”, “reference point” and the “specific test conditions” for vehicles. The expert from ISO supported in principle the proposal, in line with the latest revision of ISO Standard 362, pending a study reservation on the specific test conditions. GRB agreed to resume discussion on this matter at its September 2012 session on the basis of a revised proposal prepared by the expert from China in collaboration with the expert from ISO.

Relates to UN R51 |