13. The expert from the United Kingdom withdrew ECE/TRANS/WP.29/GRB/2010/5. Following the agreement of GRB at its previous session on the need to conclude the work on the test method for additional sound emission provisions (ASEP), the Chair introduced ECE/TRANS/WP.29/GRB/2010/9 proposing a possible approach for the incorporation of ASEP provisions into Regulation No. 51. He added that this proposal should be considered as a package only. Referring to GRB-52-15, the expert from the Netherlands presented an updated stringency analysis of the proposed solutions and questioned the term “vehicle of concern”. The Chair presented GRB-52-09 providing a clarification of the understanding of “vehicle of concern” and possible consequences of the proposed approach.

14. The expert from EC welcomed the compromise solution and suggested moving forward with the proposed approach. The expert from Norway preferred to still include a “Not To Exceed (NTE)” value into the new provisions for ASEP. The expert from the United States of America renewed his concerns expressed during the previous session of GRB (ECE/TRANS/WP.29/GRB/49, para. 11). The expert from OICA presented a number of comments (GRB-52-12) on the Chair’s proposal for ASEP. He stated that this compromise solution could be acceptable for the automotive industry with the condition of a certain lead time necessary to develop the new cars according to these new specifications.

15. Following the discussion, a large majority of GRB experts agreed on the compromise solution proposed by the Chair. The GRB Chair volunteered to prepare a concrete proposal for amendments to Regulation No. 51, for consideration by GRB at its next session on the basis of an official document.