Proposal for amendments to Global Technical Regulation No. 3
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Proposal to clarify provisions concerning the use of Combined Braking Systems (CBS) and for a series of amendments to clarify a variety of requirements, notably concerning test surface requirements, ABS cycling, and peak braking coefficient measurements. The proposal clarifies the terms “inoperative” and “disconnected”, introduces the “K-method”.

Reference Number: GRRF/2014/22
Origin: Italy
Date: 4 July 2014
Proposal Status: Superseded
Related Documents:
GRRF-76-44 | Proposal for amendments to Global Technical Regulation No. 3
GRRF-78-07 | Proposal for amendments to document GRRF/2014/22 concerning GTR No. 3
WP.29/2015/38 | Proposal for Amendment 2 to global technical regulation No. 3
Discussion(s):
Working Party on Brakes and Running Gear | Session 78 | 16-19 Sep 2014

21. The expert from Italy introduced ECE/TRANS/WP.29/GRRF/2014/22 based on GRRF‑76‑44, proposing to align the provisions with those proposed for UN Regulation No. 78 (see para. 19). GRRF adopted the proposal, as amended below. The secretariat was requested to submit the proposal to WP.29 and AC.3 for consideration at their March 2015 sessions as draft Amendment 2 to the GTR No. 3. The expert from Italy agreed to submit the corresponding technical report for consideration at the AC.3 session in March 2015. GRRF would have the opportunity to review it at its February 2015 session.

Paragraph 5.3., amend to read:

“…
d)Brake actuation force:
The control force that achieves the maximum vehicle deceleration rate as defined in paragraph 6.5.1.(c).
…”

22. The expert from EC introduced GRRF-78-07, amending document ECE/TRANS/WP.29/GRRF/2014/22, proposing to align the provisions with those proposed for Regulation No. 78 (see para. 20). GRRF agreed to revisit the document at its February 2015 session on the basis of a revised proposal by EC in collaboration with IMMA.