Regulation No. 53 currently allows for the activation of the stop lamp by application of the brakes only. As already presented at a session of the Working Party on Lighting and Light-Signalling (GRE) (see ECE/TRANS/WP29/GRE/2015/42), IMMA is proposing to introduce the activation of stop lamps under more conditions than the application of the service brake only, e.g. also by regenerative braking. As noted in the report of seventy-fourth session of GRE, see ECE/TRANS/WP29/GRE/74, para. 30: “the proposal might need to be accompanied by a modification of Regulation No. 78 under GRRF.” Therefore, IMMA has prepared this proposal for Regulation No. 78. A revised corresponding proposal on Regulation No. 53 will also be submitted to the October 2017 session of GRE.
22. The expert from IMMA introduced GRRF-86-35 with provisions allowing additional conditions for the activation of the stop lamp. The proposal received some comments. GRRF noted that some conditions were related to regenerative braking and, therefore, GRRF recommended to explore corresponding provisions in UN Regulations Nos. 13 and 13-H on the braking performance of regenerative braking and to complement the proposal for amendments to UN Regulation No. 78 with corresponding provision, not only addressing brake light activation requirements. GRRF noted the potential need to clarify the need of the word “instantaneous” in para. 5.1.16. The expert from IMMA agreed to submit a revised proposal for the September 2018 session of GRRF.
30. The expert from IMMA proposed to allow the use of different activation methods for stop lamps, and to align the stop lamp provisions with those applicable for four-wheelers (ECE/TRANS/WP.29/GRE/2017/25 and GRE-78-07). GRE noted that a corresponding proposal for amendments to Regulation No. 78 had been submitted to the Working Party on Braking and Running Gear (GRRF). The experts from Finland, Germany, Italy, Netherlands and UK commented on the proposal. The Chair invited the expert of IMMA to update the proposal based on the comments received. GRE decided to consider an updated proposal at the next session that would include the issue of its legal form (supplement or a new series of amendments).
21. The expert from IMMA introduced ECE/TRANS/WP.29/GRRF/2017/14 as amended GRRF-84-13 with provisions allowing additional conditions for the activation of the stop lamp. The expert from Canada recommended addressing this question within GTR No. 3. The Chair noted that ETRTO would not be allowed to propose amendments to GTR No. 3 and asked whether a Contracting Party to the 1998 Agreement could sponsor this amendment. GRRF raised the question why the author of the proposal selected provisions from Regulation No. 13 and not from Regulation No. 13-H. The expert from IMMA agreed to submit a revised proposal for the February 2018 session of GRRF.
30. The expert from IMMA introduced a proposal allowing for the use of different brake lamp activation methods and aligning the brake lamp provision with those applicable for four-wheelers (ECE/TRANS/WP.29/GRE/2015/42). The experts of France, Germany, Italy and Japan delivered remarks. GRE noted that this proposal might need to be accompanied by a modification of Regulation No. 78 under the responsibility of the Working Party on Braking and Running Gear (GRRF). IMMA was invited to contact GRRF and to present an updated document for the next session.
| GRE/2015/42 | |
| GRE/2017/25 | |
| GRRF-84-13 | |
| GRRF-86-35 |