18. The expert from OICA presented GRSG-101-21 clarifying the requirements on rear underrun protection devices. The expert from the United Kingdom introduced GRSG-101-26 amending the transitional provisions of draft Supplement 1 to the 02 series of amendments to Regulation No. 58, adopted at the previous session of GRSG. Following the discussion, GRSG agreed on the proposal as reproduced in GRSG-101-21-Rev.1 and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their November 2011 session, as a Corrigendum to ECE/TRANS/WP.29/2011/107. [Note by the secretariat: see informal document WP.29-155-04.]

19. The expert from Germany recalled the purpose of documents GRSG-100-25 and ECE/TRANS/WP.29/GRSG/2011/19 proposing to introduce, into Regulation No. 58, more stringent requirements for rear underrun protection devices. The expert from Japan introduced informal documents GRSG-101-10-Rev.1, GRSG-101-27 and GRSG-101-28 amending ECE/TRANS/WP.29/GRSG/2011/19. GRSG welcomed the proposals and noted a number of comments. Following the discussion, the expert from Germany volunteered to organize an ad hoc expert meeting to further discuss the open issues. He invited all GRSG experts to attend that meeting, scheduled to be held on 23 January 2012. GRSG agreed to resume consideration on this subject at its next session in April 2012 on the basis of a revised proposal to be submitted by Germany, taking into account the outcome of the discussion of the ad hoc meeting.

20. GRSG considered proposals to align the transitional provisions of the 02 series of amendments to the Regulation with the general guidelines adopted in TRANS/WP.29/1044 (ECE/TRANS/WP.29/GRSG/2011/33 and ECE/TRANS/WP.29/GRSG/2011/34). GRSG adopted ECE/TRANS/WP.29/GRSG/2011/34, as amended below, and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their March 2012 session, as draft Supplement 2 to the 02 series of amendments to Regulation No. 58:

Paragraph 31.5., amend to read:
“31.5. As from 48 months …

• (a) … meets the requirements of paragraph 2.3.(b) or paragraph 2.3.(c) or Part III of this Regulation as amended by the 02 series of amendments;

• (b) … meet the requirements of paragraph 2.3.(b) or paragraph 2.3.(c) or Part III of this Regulation as amended by the 02 series of amendments."

26. The expert from Germany presented ECE/TRANS/WP.29/GRSG/2011/19 and GRSG-100-25 strengthening the requirements on rear underun protection devices. GRSG noted a number of comments and agreed to consider again this proposal at its next session. It was agreed to keep GRSG-100-25 as reference document.

27. The experts from the Netherlands, EC and CLCCR introduced ECE/TRANS/WP.29/GRSG/2011/20 extending the scope of Regulation No. 58 to certain categories of vehicles. The experts from Japan and OICA introduced GRSG-100-12-Rev.1 clarifying the text ECE/TRANS/WP.29/GRSG/2011/20. Following the discussion, GRSG adopted ECE/TRANS/WP.29/GRSG/2011/20, as reproduced in Annex VI and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their November 2011 session, as draft Supplement 1 to the 02 series of amendments to Regulation No. 58.

19. The expert from Germany recalled the discussion at the previous session of GRSG on ECE/TRANS/WP.29/GRSG/2011/19 proposing to insert into UN Regulation No. 58 more stringent requirements for rear under run protection devices. He reported on the outcome of the recent ad hoc group meeting and announced the intention to undertake, in early 2013, a cost-benefit analysis on this subject. GRSG agreed to resume consideration at its next session in April 2013, on the basis of a revised proposal to be submitted by Germany taking into account the results of the cost-benefit analysis.

30. The expert from FIA presented GRSG-104-49 underlining the need to review the requirements of UN Regulation No. 58 for an improved and effective passenger vehicle occupant protection in the event of a rear impact with a heavy duty vehicle. He also introduced the position of his organization on this subject (GRSG-104-50). GRSG welcomed that information.

31. Recalling the discussion on ECE/TRANS/WP.29/GRSG/2011/19 at the previous session of GRSG, the expert from Germany gave some preliminary information (GRSG-104-51) on a cost-benefit analysis carried out in Germany on this subject. He volunteered to send the final report of the study, once published, to all GRSG experts. GRSG agreed to resume consideration at its next session in October 2013, on the basis of a revised proposal to be submitted by Germany taking into account the results of the cost-benefit analysis.

31. Recalling the discussion on ECE/TRANS/WP.29/GRSG/2011/19 at the previous session of GRSG, the expert from Germany gave some preliminary information (GRSG-104-51) on a cost-benefit analysis carried out in Germany on this subject. He volunteered to send the final report of the study, once published, to all GRSG experts. GRSG agreed to resume consideration at its next session in October 2013, on the basis of a revised proposal to be submitted by Germany taking into account the results of the cost-benefit analysis.

18. The expert from Germany recalled the discussion at the previous session of GRSG on ECE/TRANS/WP.29/GRSG/2011/19 proposing to introduce, into UN Regulation No. 58, more stringent requirements for rear underrun protection devices. He reported on the outcome of the ad hoc expert meeting held in Bonn on 23 January 2012. As a result, he introduced GRSG-102-26 superseding ECE/TRANS/WP.29/GRSG/2011/19. The expert from OICA presented GRSG-102-32-Rev.1 containing preliminary comments to GRSG-102-26. GRSG welcomed the proposals and noted a number of comments, especially on the need to clarify the scope of the proposed amendments. The expert from France raised concerns on the interpretation of the text of the Regulation. He underlined the need to clarify the current provisions of the measurement method (static test). The expert from Japan introduced GRSG-102-34 commenting the proposal tabled by OICA.

19. Following the discussion, GRSG invited the interested experts to discuss, at a further meeting, the open issues taking into account the comments received. GRSG agreed to resume consideration on this subject at its next session in October 2012 on the basis of a revised proposal to be submitted by Germany as the outcome of the ad hoc expert group meeting. The expert from Germany volunteered to organize that event and invited all GRSG experts to attend the meeting.

28. Recalling the purpose of ECE/TRANS/WP.29/GRSG/2013/27, the expert from Germany presented ECE/TRANS/WP.29/GRSG/2014/18 and GRSG-106-26 introducing into UN Regulation No. 58 more stringent requirements for rear underrun protection devices. The expert from OICA proposed ECE/TRANS/WP.29/GRSG/2014/11 on alternative provisions. The expert from Germany presented GRSG-106-32 with a comparison of the proposed requirements listed in the documents. The expert from CLCCR presented some observations and recommendations of his organization (GRSG-106-11). The expert from Sweden raised concerns related to the test conditions for type-approval of rear underrun protection devices (GRSG-106-40). GRSG noted a number of comments.

29. Following the discussion, GRSG agreed to resume consideration at its next session in October 2014, on the basis of a revised official document to be prepared by the experts from Germany jointly with the experts from Sweden, CLCCR and OICA. The secretariat was requested to keep GRSG-106-32 on the agenda.

33. The expert from Germany introduced ECE/TRANS/WP.29/GRSG/2013/27 proposing more stringent requirements for rear underrun protection devices. He also presented GRSG-105-23 with a detailed cost-benefit analysis carried out in Germany on this subject. The expert from IRU raised concerns by his organizations and presented a number of observations (GRSG-105-06). The expert from OICA proposed an alternative text for amending UN Regulation No. 58 (GRSG-105-20). The expert from CLCCR presented some observations and recommendations of her organization (GRSG-105-26).

34. GRSG welcomed the proposal by Germany including the cost-benefit analysis, but noted a number of comments and reservations. Following the discussion, the Chair suggested keeping the subject on the agenda of GRSG instead of establishing a new informal group and invited all experts to transmit their written comments to the expert from Germany. GRSG agreed to resume consideration at its next session in May 2014, on the basis of a revised proposal to be submitted by Germany taking into account the comments received. The secretariat was invited to distribute GRSG-105-20 with an official symbol.