Working Party on Brakes and Running Gear (GRRF)
Reports to WP.29

At the June 2018 WP.29 session, GRRF was reconstituted as the Working Party on Automated Vehicles (GRVA). Tyres, couplings, and other responsibilities not related to vehicle handling and automation have been transferred to other working parties. As a result, the planned GRRF September session will be the first GRVA session.

The Working Party on Braking and Running Gear (GRRF) prepares proposals for consideration by the World Forum/WP.29 concerning primary safety systems such as vehicle braking, steering, and chassis systems that enable drivers to avoid accidents. In this regard, the GRRF supervises various informal working groups developing regulatory provisions related to these primary vehicle handling systems, including not only on motor vehicles but also vehicle trailers.

GRRF regularly gathers more than 100 specialists in active safety systems from government agencies and non-governmental organizations around the world to deliberate on regulatory proposals before the accredited government delegations decide whether to pass the proposals on to the World Forum.

GRRF usually convenes during February and September.

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Documents 2011
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7 Jan 2011 Update to document GRRF-2011-02 GRRF-69-06
18 Jan 2011 Revised Terms of Reference for the group of interested experts on Brake Related Signals Between Vehicles (BRSBV) GRRF-69-03/Rev.1
19 Jan 2011 Proposal for Corrigendum 1 to Revision 2 of Regulation No. 75 GRRF-69-07
19 Jan 2011 Proposal for draft amendments to Regulation No. 121 GRRF-69-08
21 Jan 2011 Proposal for draft amendments to ECE Regulations Nos. 13, 13-H, 79, 89 and draft Regulation on LDWS GRRF-69-09
21 Jan 2011 Proposal for draft amendments to ECE Regulation No. 13-H GRRF-69-10
21 Jan 2011 Extensions of type approvals: Request for guidance from GRRF GRRF-69-11
25 Jan 2011 Proposal for amendments to Regulation No. 13 GRRF-69-12
25 Jan 2011 Proposal for amendments to Regulation No. 55 GRRF-69-13
25 Jan 2011 Proposal for amendments to Regulation No. 13 GRRF-69-14
1 Feb 2011 Proposal regarding R13-H with regard to symbols GRRF-69-15
1 Feb 2011 Proposal for draft amendments to Regulation No. 13-H GRRF-69-18
1 Feb 2011 Report of GRRF Alternative Method Electronic Vehicle Stability Control (AMEVSC) Informal Working Group GRRF-69-20
1 Feb 2011 Comments from India on document GRRF-2011-12 GRRF-69-16
1 Feb 2011 Comments from India on document GRRF-2011-13 GRRF-69-17
2 Feb 2011 Scope for the draft UNECE Regulation(s) on Automatic Emergency Braking Systems GRRF-69-19
4 Feb 2011 Adopted amendments to GRRF-2010-29/Rev.1 (Proposal for a new Regulation on Lane Departure Warning System) GRRF-69-21
4 Feb 2011 GRRF Alternative Method Electronic Vehicle Stability Control - proposed amendment to document GRRF-69-06 GRRF-69-22
4 Feb 2011 Proposal to amend GRRF-2011-12 - Proposal for Supplement 1 to the 01 series of amendments to Regulation No. 117 GRRF-69-23
4 Feb 2011 Proposal for draft amendments to Regulation No. 55 GRRF-69-24
4 Feb 2011 Proposal for draft amendments to Regulation No. 64 GRRF-69-25
4 Feb 2011 Brake electric/electronic interface embodiment alternatives GRRF-69-26
4 Feb 2011 Update of document GRRF-2011-02 (Regulation No. 13 - ESC provisions) GRRF-69-06/Rev.1
8 Feb 2011 Revised proposal for draft amendments to ECE Regulation No. 55 GRRF-69-24/Rev.1
8 Feb 2011 Amendments to GRRF-2011-05 GRRF-69-27
8 Feb 2011 Summary of decisions on documents considered at the 69th session of GRRF and follow-up GRRF-69-28
22 Feb 2011 Annotated provisional agenda for the 70th GRRF session GRRF/2011/19
4 Mar 2011 Proposal for a Regulation on collision avoidance emergency braking system GRRF/2011/20
4 Mar 2011 Proposal for a Regulation on collision mitigation emergency braking systems GRRF/2011/21
4 Mar 2011 Proposal for a Regulation on advanced emergency braking systems GRRF/2011/22
4 Mar 2011 Report of the GRRF on its 69th session GRRF/69
30 Mar 2011 Proposal for a Regulation on collision avoidance emergency braking system GRRF/2011/23
30 Mar 2011 Proposal for a Regulation on collision mitigation emergency braking systems GRRF/2011/24
30 Mar 2011 Proposal for a Regulation on advanced emergency braking systems GRRF/2011/25
30 Mar 2011 Proposal for 01 Series of amendments to the Draft Regulation on advanced emergency braking systems GRRF/2011/26
30 Mar 2011 Correction to the provisional agenda for the 70th GRRF session GRRF/2011/19/Corr.1
1 Apr 2011 Proposal to exempt categories M2, M3, and G and special purpose vehicles from AEBS requirements GRRF/2011/27
10 May 2011 European Commission comments on document GRRF/2011/27 (OICA/CLEPA request for exclusion of certain special vehicles from the scope of the draft Regulation(s) on AEBS) GRRF-70-01
12 May 2011 Proposal from the European Commission on behalf of the GRRF informal group on AEBS/LDWS for amendments to the document GRRF/2011/26 GRRF-70-06
12 May 2011 Amendment to documents GRRF/2011/23, 24, and 25 GRRF-70-02
12 May 2011 Proposal from the European Commission on behalf of the GRRF informal group on AEBS/LDWS for amendments to the document GRRF/2011/23 GRRF-70-03
12 May 2011 Proposal from the European Commission on behalf of the GRRF informal group on AEBS/LDWS for amendments to the document GRRF/2011/24 GRRF-70-04
12 May 2011 Proposal from the European Commission on behalf of the GRRF informal group on AEBS/LDWS for amendments to the document GRRF/2011/25 GRRF-70-05
13 May 2011 Program for the Advanced Emergency Braking System (AEBS) demonstration organized by CLEPA at the Touring Club Swiss, Geneva on the 12th May 2011 GRRF-70-07
13 May 2011 Revised amendment to documents GRRF/2011/23, 24, and 25 GRRF-70-02/Rev.1
29 Jun 2011 Advanced Emergency Braking System (AEBS) Sensor Technology – Status of Vertical Angle Capabilities GRRF-70-08
4 Jul 2011 Proposal for amendments to Regulation No. 13 (Heavy vehicle braking) GRRF/2011/32
5 Jul 2011 Annotated provisional agenda for the 71st GRRF session GRRF/2011/28
5 Jul 2011 Proposal for amendment to the 02 series of amendments to Regulation No. 117 GRRF/2011/29
5 Jul 2011 Proposal for amendment to the 02 series of amendments to Regulation No. 117 GRRF/2011/30
5 Jul 2011 Proposal for amendments to Regulation No. 106 GRRF/2011/31
5 Jul 2011 Proposal for amendments to Regulation No. 13 GRRF/2011/33
5 Jul 2011 Proposal for draft amendments to Regulation No 13-H GRRF/2011/35
5 Jul 2011 Proposal for amendments to Regulation No. 13-H GRRF/2011/37
5 Jul 2011 Proposal for amendments to Regulation No. 90 GRRF/2011/38
16 Jul 2011 Corrigenda to document GRRF/2011/38 GRRF/2011/38/Corr.1
20 Jul 2011 Running order of the provisional agenda of the 71st session of GRRF GRRF-71-01
20 Jul 2011 Draft Proposal for amendment of Regulation No. 90 GRRF-71-02
22 Jul 2011 Report of the GRRF on its 70th session GRRF/70
22 Jul 2011 CLEPA UNECE live demonstration of Advanced Emergency Braking Systems (AEBS) Resource Link
26 Jul 2011 Proposal for amendments to Regulation No. 13 and Regulation No. 13-H GRRF/2011/34
26 Jul 2011 Proposal for amendments to the new UN Regulation on advanced emergency braking systems GRRF/2011/39
18 Aug 2011 Proposal for corrigendum to document WP.29/GRRF/2011/30 - (ETRTO) - Proposal for amendments to Regulation No. 117 GRRF-71-04
18 Aug 2011 Amendments to document WP.29/2011/94 - Proposal for amendments to Regulation No. 13 GRRF-71-03
24 Aug 2011 Proposal for amendments to Regulation No. 13 GRRF/2011/36
24 Aug 2011 Proposal for amendments to Regulation No. 55 GRRF-71-05
24 Aug 2011 ISO 15222:2011- Overview GRRF-71-06
24 Aug 2011 Proposal for amendments to Regulation No. 55 GRRF-71-07
1 Sep 2011 Annotated provisional agenda for the 71st GRRF session: Addendum 1 GRRF/2011/28/Add.1
1 Sep 2011 Annotated provisional agenda for the 71st GRRF session: Addendum 2 GRRF/2011/28/Add.2
6 Sep 2011 Testing method for measuring the wet grip index of C1 tyres GRRF-71-10
6 Sep 2011 New Snow Test Method for Tyre Class C2 GRRF-71-11
6 Sep 2011 Proposal for merging documents GRRF/2011/29 and GRRF/2011/30 related to amendments to Regulation No. 117 GRRF-71-09
6 Sep 2011 New Snow Test Method for Tyre Class C3 GRRF-71-12
6 Sep 2011 UNECE Regulation No 106: Proposed amendments GRRF-71-13
6 Sep 2011 Proposal for amendments to Regulation Nos. 13-H and 13 GRRF-71-14
6 Sep 2011 Alternative to the amendment proposed in document WP.29/2011/36 GRRF-71-15
8 Sep 2011 Brake system threshold pressure compatibility band between motor vehicles and trailers GRRF-71-19
8 Sep 2011 Proposal to restrict the limits for coupling force control systems GRRF-71-18
9 Sep 2011 Progress report of the AMEVSC informal working group GRRF-71-20
10 Sep 2011 German concerns over alternative type approval for trailer brake systems GRRF-71-21
12 Sep 2011 Progress report of the ACV informal group GRRF-71-22
12 Sep 2011 European Commission comments on document GRRF-71-16 GRRF-71-23
12 Sep 2011 Proposal for amendment to document WP.29/2011/93 GRRF-71-16
12 Sep 2011 Proposal for amendment to Regulation No. 13 GRRF-71-17
14 Sep 2011 EC proposal for alternate footnote 4 on N2 < 8 ton and M2 pass/fail values GRRF-71-26
14 Sep 2011 Proposal for amendments to the new UN Regulation on AEBS GRRF-71-24
14 Sep 2011 Proposal for amendments to documents WP.29/2011/92 and WP.29/2011/93 GRRF-71-25
14 Sep 2011 Adopted amendments to documents WP.29/2011/92 and WP.29/2011/93 GRRF-71-27
14 Sep 2011 Proposal for amendments to UNR30 : markings for “temporary uses spare tyres” GRRF-71-28
14 Sep 2011 Amendments to the 02 series of amendments to Regulation No. 117 GRRF-71-29
16 Sep 2011 Additional adopted amendments to document WP.29/2011/93 GRRF-71-30/Rev.2
16 Sep 2011 Proposal for amendments to Regulations N° 30, 54 and 117 GRRF-71-31
20 Sep 2011 Adopted amendments to documents WP.29/2011/92 and WP.29/2011/93: Revision GRRF-71-27/Rev.1
22 Sep 2011 Additional comments from India on the GTR for passenger vehicle tyres GRRF-71-32
22 Sep 2011 Summary of decisions on documents considered at the GRRF-71session GRRF-71-33
29 Oct 2011 Report of the GRRF on its 71st session GRRF/71
25 Nov 2011 Corrigenda to the report of the GRRF on its 71st session GRRF/71/Corr.1
28 Nov 2011 Annotated provisional agenda for the 72nd GRRF session GRRF/2012/1
9 Dec 2011 Proposal for Supplement 14 to the 00 series of amendments to Regulation No. 13-H GRRF/2011/35/Rev.1
9 Dec 2011 Proposal for Supplement 10 to the 11 series of amendments to Regulation No. 13 GRRF/2012/2
9 Dec 2011 Proposal for Supplement 2 to the 02 series of amendments to Regulation No. 90 GRRF/2012/3
9 Dec 2011 Proposal for Supplement 17 to the 02 series of amendments to Regulation No. 30 GRRF/2012/4
9 Dec 2011 Proposal for Supplement 2 to the 02 series of amendments to Regulation No. 117 GRRF/2012/5
9 Dec 2011 Proposal for Supplement 17 to the 02 series of amendments to Regulation No. 30 GRRF/2012/6
9 Dec 2011 Proposal for Supplement 10 to the 11 series of amendments to Regulation No. 13 GRRF/2012/7
9 Dec 2011 Terms of Reference for the informal group on Automated Connections between Vehicles GRRF/2012/8
9 Dec 2011 Proposal for Supplement 10 to the 11 series of amendments to Regulation No. 13 GRRF/2012/9
9 Dec 2011 Proposal for Corrigendum 4 to the 02 series of amendments to Regulation No. 117 GRRF/2012/10
9 Dec 2011 Proposal for Supplement 10 to the 11 series of amendments to Regulation No. 13 GRRF/2012/11
9 Dec 2011 Proposal for Supplement 10 to the 11 series of amendments to Regulation No. 13 GRRF/2012/12
9 Dec 2011 Proposal for Supplement 2 to the 02 Series of Amendments to Regulation No. 64 GRRF/2012/13
22 Dec 2011 Proposal for amendment to Regulation No. 13 GRRF-72-01
22 Dec 2011 Proposal for amendments to Regulations Nos. 13-H and 13 GRRF-72-02
22 Dec 2011 Proposal for amendments to Regulation No. 13 GRRF-72-03
22 Dec 2011 Proposal for amendment to Regulation No. 64 GRRF-72-04