Status report, including the current state of the draft text, on efforts to reach agreement on the introduction of provisions for electro-hydraulic systems into the test conditions for trailers with electrical braking systems.
12. The expert from Germany, recalling the purpose of ECE/TRANS/WP.29/ GRRF/2013/29, introduced GRRF-79-24 containing the draft working in development by the experts from Germany and the Netherlands about provisions for electromechanical braking systems for towing vehicles and their trailers.
13. The experts from Germany and the Netherlands agreed to submit a revised proposal to the September 2015 session of GRRF or to deliver a roadmap in case longer work would be needed.
14. The experts from Germany and the Netherlands invited experts from the industry and from other countries to participate into their work.
12. The expert from Germany introduced GRRF-78-40 based on ECE/TRANS/WP.29/GRRF/2013/29 which detailed proposed amendments to UN Regulation No. 13 on provisions for electro-mechanical braking systems. GRRF acknowledged the status report. The experts from Germany and the Netherlands volunteered to prepare a revised proposal for consideration at the February 2015 session, addressing the remaining open issues.
13. The expert from Germany questioned the decision of GRRF taken in 2004 to exclude the use of the overrun brake for a full trailer (TRANS/WP.29/GRRF/2004/11) and not extended to electrical brakes according to Annex 14. The expert from the Netherlands noted that the conscious decision in 2004 to exclude overrun brakes for full trailers was design restrictive. He suggested that the corresponding provisions should be replaced by performance requirements.
10. The expert from Germany introduced GRRF-76-24 based on ECE/TRANS/WP.29/GRRF/2013/29 and proposing amendments to Regulation No. 13 introducing provisions for electro-mechanical braking systems. GRRF acknowledged the status report and expected a revised proposal at its September 2014 session, addressing the remaining open issues, which the experts from Germany and the Netherlands volunteered to prepare.
11. The expert from Germany presented ECE/TRANS/WP.29/GRRF/2013/29 introducing provisions for electrical or hydraulic transmissions for brake systems. The expert from OICA, with reference to GRRF-75-13, answered to this proposal. GRRF noted a number of comments and agreed to resume consideration of this item at its next session on the basis of a revised document that the expert from Germany volunteered to prepare.
| GRRF/2012/11 | |
| GRRF/2013/29 | |
| GRRF/2004/11 | |
| GRRF-78-40 | |
| GRRF-79-24 |