Proposal for amendments to Regulation No. 55
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UN R55 informal group proposal for:

  1. An amendment for the separation of the procedures to verify towable mass from the procedure of setting and certifying performance values;
  2. An amendment that adds procedures to verify towable mass for vehicle combinations that have hitherto not been accounted for in the Regulation;
  3. Amendments that adds integrated fixing points for secondary couplings;
  4. An amendment that clarifies the procedure to identify worst cases for certification testing;
  5. Amendments that removes typos in the current Regulation.
Please note that, under paragraph 3.4 regarding “Combination 4”, the Clevis coupling formula should read “DC” rather than “D” as shown.

Reference Number: GRRF/2017/3
Date: 14 November 2016
Proposal Status: Superseded
Related Documents:
GRRF-83-06/Rev.1 | Comments on the proposal of the Revision of UN R55 informal group to GRRF
WP.29/2017/69 | Proposal for Supplement 7 to the 01 series of amendments to Regulation No. 55
Working Party on Brakes and Running Gear | Session 83 | 23-27 Jan 2017

18. The Secretary of the IWG on Regulation No. 55 presented (GRRF-83-06) a consolidated proposal (ECE/TRANS/WP.29/GRRF/2017/3) based on the proposals presented at the previous session of GRRF and addressing the comments received.

19. GRRF adopted the proposal [after correcting an equation in Annex 8, para. 3.4., Clevis Coupling D formulae] and requested the secretariat to submit it as part of the draft Supplement 7 to the 01 series of amendments to Regulation No. 55 (Mechanical coupling) to WP.29 and AC.1 for consideration and vote at their June 2017 sessions.