23. GRRF reviewed ECE/TRANS/WP.29/GRRF/2015/41 and GRRF-80-24 under agenda item 5(b) below.

24. The expert from EC introduced ECE/TRANS/WP.29/GRRF/2015/40 and ECE/TRANS/WP.29/GRRF/2015/41, proposing to clarify the possibility to install means to temporarily reduce or disable the ABS function of motorcycles in certain conditions. The expert from Canada submitted an alternative wording (GRRF-80-19) and recalled that an authorization from the Executive Committee AC.3 for developing an amendment to GTR No. 3 would be required. The proposal received some general comments related to road safety. The expert from IMMA briefly introduced GRRF-80-13 commenting the proposals to which the expert from EC responded (GRRF-80-24 and GRRF-80-25). A majority of experts expressed a specific concern related to condition (f). The expert from EC volunteered to prepare two revised proposals for the [February 2016] session of GRRF.

19. The expert from IMMA introduced ECE/TRANS/WP.29/GRRF/2014/21 based on GRRF‑76‑45, proposing general clarifications to UN Regulation No. 78 and specific requirements for the use of Combined Braking Systems (CBS) and the parking brake. He added that the amendments contained in the proposal have been aligned with those proposed for the Global Technical Regulation No. 3 below. GRRF adopted this proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their March 2015 sessions as draft Supplement 2 to the 03 series of amendments to UN Regulation No. 78.

20. The expert from EC introduced GRRF-78-06, supplementing document ECE/TRANS/WP.29/GRRF/2014/21, aimed at establishing technical requirements for ABS systems that are temporarily disabled e.g. in off-road conditions. The expert from Australia offered to provide further data from their current study on this issue. Following the discussion, GRRF agreed to revisit this item at its February 2015 session on the basis of a revised proposal jointly prepared by EC and IMMA.