This agenda item relates to UN R78 Motorcycle Braking.

21. GRRF agreed with the proposal of the expert from EC to reintroduce ECE/TRANS/WP.29/GRRF/2015/41 under agenda item 5(a) and to reconsider the proposal clarifying the possibility to install means to disable the ABS function in certain conditions for L-category vehicles. The expert recalled that a majority of experts expressed specific concerns related to the condition (f) in the proposal at the previous session and therefore agreed to delete it, as shown in GRRF-81-28. The proposal, received some comments to amend the text in a more stringent manner. The expert from IMMA advocated for transitional provisions aligned with those of Euro 5 in Europe. He added that the newly proposed wording was too restrictive and may exclude some vehicles that were already equipped with the feature. GRRF agreed therefore on longer transitional provisions for existing vehicle types, and also to not excessively restrict the kind of vehicle that could be equipped with the ABS off switch function, by softening the wording of these provisions. The Contracting Parties agreed on the amended proposal GRRF-81-28-Rev.1. The expert from Italy expressed a scrutiny reservation on the provisions related to the off road switch. GRRF adopted the proposal as reproduced in Annex III and requested the Secretariat to submit it to WP.29 and AC.1 for consideration at their November 2016 sessions, as a new 04 series of amendments to Regulation No. 78, subject to final review by GRRF in September 2016.

22. The expert from EC recalled the purpose of ECE/TRANS/WP.29/GRRF/2015/42, proposing to apply to tricycles the existing Anti-lock Braking Systems (ABS) requirements for Powered Two Wheelers (PTWs). The experts from IMMA and OICA agreed with the proposal. GRRF adopted the proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as part of the Supplement 3 to the 03 series of amendments to Regulation No. 78.

23. The expert from IMMA introduced ECE/TRANS/WP.29/GRRF/2016/23 proposing amendments to Regulation No. 78 in order to allow the installation of Emergency Stop Signal on motorcycles. GRRF noted that IMMA was coordinating the related activity at the Working Party on Lighting and Light-Signalling (GRE) to introduce the relevant provisions in Regulation No. 53. GRRF adopted the proposal with the minor correction below and requested the Secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as part of the Supplement 3 to the 03 series of amendments to Regulation No. 78.

In paragraph 5.1.15.1., for “m/s2”, read “m/s2

Documentation
GRRF-81-28 | Proposal for amendments to ECE/TRANS/WP.29/GRRF/2015/41 (EC)
GRRF-81-28/Rev.1 | Proposal for amendments to ECE/TRANS/WP.29/GRRF/2015/41 (EC)
GRRF/2015/41 | Proposal for an amendment of Regulation No. 78 (EC)
GRRF/2015/42 | Proposal of Supplement 3 to the 03 series of amendments to Regulation No. 78 (EC)
GRRF/2016/23 | Proposal for a supplement to Regulation No. 78 (IMMA)