Adopted amendments to GRRF/2017/23 (UN R13, 13-H, 140)
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Revised proposal, as approved during the 84th GRRF session, to enable activation of the ESC optical symbol in cases of a corrective steering function intervention when the CSF intervention is activated under the control of an ESC system. The aim is to avoid separate requirements for brake-actuated and steering-actuated vehicle stability functions (VSF) that would lead to two optical warnings where only one is necessary. This would enable use of the ESC intervention tell-tale for CSF steering intervention.

Reference Number: GRRF-84-39
Date: 22 September 2017
Proposal Status: Superseded
Related Documents:
GRRF-84-22 | Proposal for amendments to the 02 series of amendments to UN Regulation No. 79
GRRF/2017/23 | Proposal for amendments to Regulations Nos. 13, 13-H and 140
WP.29/2018/8 | UN R13-H: Proposal for Supplement 17 to the 00 series of amendments
WP.29/2018/11 | UN R79: Proposal for Supplement 1 to the 02 series of amendments
WP.29/2018/13 | UN R140: Proposal for Supplement 1
Working Party on Brakes and Running Gear | Session 84 | 19-22 Sep 2017

48. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2017/23 as amended by GRRF-84-22 with provisions to be included in UN Regulations Nos. 13, 13-H, 79 and 140 related to the stability control warning activation by Corrective Steering Functions and Automatically Commanded Steering Functions. The proposal received some comments. GRRF amended the proposal as reflected in GRRF-84-39.

49. GRRF agreed with the proposal as amended by Annex V of the GRRF session report and requested the secretariat to submit it [together with GRRF-84-22] as draft supplements to Regulations Nos. 13, 13-H, 79 and 140 to WP.29 and AC.1 for consideration and vote at their March 2018 sessions.