3. GRRF focused its work on the text in square brackets in ECE/TRANS/WP.29/2011/92 (Step 1– original version of the Regulation on Advanced Emergency Braking Systems) and ECE/TRANS/WP.29/2011/93 (Step 2–01 series of amendments to the Regulation), both on the agenda of the November 2011 session of WP.29: Requirements for vehicles not equipped with pneumatic rear-axle suspension, requirements for N2 and M2 vehicles, requirements for vehicles not equipped with pneumatic braking and transitional provisions between step 1 and step 2.

4. The Chair of the informal group on Automatic Emergency Braking and Lane Departure Warning Systems (AEBS/LDWS) reported on the progress made by the informal group from the last GRRF session to the meeting held on 12 September 2011 in conjunction with the proper session of GRRF. He introduced GRRF-71-25 as the outcome of the discussion of the informal group. In particular, it was proposed to tackle, in the preamble of the Regulation, vehicles not equipped with a pneumatic rear-axle suspension. The expert from OICA proposed in GRRF-71-24 to add in paragraph 5.1. the possibility for an “optional” type-approval for vehicles not equipped with a pneumatic rear-axle suspension. The expert from Germany supported this proposal. The secretariat and the expert from EC were of the opinion that these vehicles were already tackled in the preamble (see above) and that the wording for paragraph 5.1. was confusing because by definition a UNECE Regulation was optional. Furthermore, it was not clear for the secretariat which requirements would apply to these vehicles. GRRF could not reach a final decision on this OICA proposal and agreed to let the World Forum for Harmonization of Vehicle Regulations (WP.29) decide whether an “optional” type-approval in paragraph 5.1. was appropriate for vehicles not equipped with a pneumatic rear-axle suspension.

5. The expert from OICA proposed in GRRF-71-24 replacing ECE/TRANS/WP.29/GRRF/2011/39 to exclude from the scope of the original version of the AEBS Regulation: N2 vehicles below 8 tons, M2 vehicles and vehicles not equipped with pneumatic braking. After discussion GRRF supported this proposal.

6. For the 01 series, the expert from OICA proposed in GRRF-71-24 to include all N2 and M2 vehicles in the scope of the Regulation. However, for N2 vehicles below 8 tons and M2 vehicles, it was proposed to set the limit values in Annex 3 at a later stage (before 1 November 2016), in order to give more time to GRRF to develop special requirements for these vehicles. GRRF supported this proposal but with the alternative wording proposed by the expert from EC in GRRF-71-26. GRRF committed itself to develop these requirements in the proposed timeframe.

7. With regard to the timing of the first warning mode for a moving target for collision avoidance requirements (i.e. cells E1 and E2 of the table in GRRF-70-06), GRRF recalled the preference by the expert from Germany, for 2 seconds specifically for legal reasons. However, since a majority of experts favoured 1.4 second, GRRF proposed to remove the square brackets from 1.4 seconds in the table in Annex 3 of ECE/TRANS/WP.29/2011/92 and ECE/TRANS/WP.29/2011/93. Since the requirements of rows 1 and 2 of ECE/TRANS/ WP.29/2011/92 and ECE/TRANS/WP.29/2011/93 became identical, GRRF agreed to merge the two rows of the table.

8. GRRF considered GRRF-71-16 (OICA) and GRRF-71-23 (EC) amending the transitional provisions of the 01 series of amendments. Since GRRF could not reach a final decision, GRRF requested the secretariat to draft the transitional provisions according to the objectives fixed in GRRF-71-30. After discussion, GRRF adopted GRRF-71-30-Rev.2 as reproduced in Annex II. One paragraph reproducing the text of the 1958 Agreement was left in square brackets for final decision by WP.29 at its November 2011 session.

9. In concluding the discussion, GRRF adopted GRRF-71-27-Rev.1 as reproduced in Annex II and requested the secretariat to submit it to WP.29 and the administrative Committee of the 1958 Agreement (AC.1) as amendments to ECE/TRANS/WP.29/2011/92 and ECE/TRANS/WP.29/2011/93, for consideration at their November 2011 sessions.