Proposal to amend the k value method reference in the draft of ESC regulation
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Proposal to delete Annex 7 from the draft ESC regulation and replace the procedure for validating the test (road) surface condition with a reference to Appendix 6 to Annex 2 of UN R13-H. This change would ensure that the ESC regulation fully aligns with UN R13-H and with GTR No. 8 on ESC systems.

Reference Number: GRRF-78-29
Origin: OICA
Date: 15 September 2014
Proposal Status: Superseded
Related Documents:
GRRF/2014/12 | Proposal for a new Regulation on Electronic Stability Control (ESC)
Working Party on Brakes and Running Gear | Session 78 | 16-19 Sep 2014

49. The expert from OICA introduced the new documents as well as the proposals for separate UN Regulations on Brake Assist Systems (BAS) (ECE/TRANS/WP.29/GRRF/2014/11) and on Electronic Stability Control (ESC) (ECE/TRANS/WP.29/GRRF/2014/12) extracted from UN Regulation No. 13‑H (ECE/TRANS/WP.29/GRRF/2014/10). The Chair recalled the purpose of GRRF-76-33 and GRRF-76-34. OICA stated that GRRF-76-34 had been taken into account when drafting the proposals above. He introduced GRRF-78-29 proposing to delete the k-test method prescribed in Annex 7 and only keep the method prescribed in Appendix 2 to Annex 6 to align the UN Regulation with GTR No. 8. GRRF agreed to reconsider this proposal at its seventy-ninth session.