This proposal aims to improve brake distribution between truck and trailer of heavy vehicle combinations at everyday low decelerations, to enhance uniform use of all wheel brakes and thereby to counteract loss of full brake performance. The proposal is based on ISO 20918.

Update on the activity of the Alternative Method for the assessment of Electronic Vehicle Stability Control systems (AMEVSC) Informal Working Group since September, including on its meeting of 18 October 2011.

Working draft of Annex 21-Appendix 1 to UN R13 on heavy-duty braking systems that would address the use of dynamic stability simulations.

List of the documents used across all the meetings of the AMEVSC informal group.

Working draft of Annex 21-Appendix 3 of UN R13 on heavy-duty braking that addresses the test report to be used with the vehicle stability function simulation tool.

WABCO proposed changes to the draft text for Annex 21-Appendix 1 and Appendix 3 of the working document.

Presentation on EU plans for updating the regulatory regime for motorcycles and related vehicles, including obligatory fitment of advanced brake systems, abandonment of the 74 kW power restriction, anti-tampering measures, and mandatory “automatic headlamp on” feature.

Copy of the text submitted to GRRF to clarify the requirements in Annex 21 of Regulation No. 13 regarding the use of simulation, specifically in the
Appendices 1, 2 and 3 of Annex 21.

Working draft of Annex 21-Appendix 2 of UN R13 on heavy duty braking to address the use and validation of the dynamic stability simulation tool for evaluating electronic vehicle stability control systems.

Revised draft copy of the “Proposal for Supplement 9 to the 11 series of amendments to Regulation No. 13” returned by GRRF for revision.

Report from the 5th session of the informal working group on Automated Connections between Vehicles working on language to integrate such systems within UN R13 (heavy-duty braking) and UN R55 (mechanical couplings).

Japan plans to issue a regulation on 1 April 2012 along with fiscal incentives to promote the use of advanced emergency braking systems on heavy-duty vehicles. Mandatory installation will be phased in starting from 1 November 2014.

This proposal aims to improve brake distribution between truck and trailer of heavy vehicle combinations at everyday low decelerations, to enhance uniform use of all wheel brakes and thereby to counteract loss of full brake performance. The proposal is based on ISO 20918 and supercedes GRRF-72-07.

UN R90 unintentionally omits the bedding procedure for the brake drum high load test for M2, M3, N2 and N3 vehicles. CLEPA proposes using the same bedding procedure as already adopted for the thermal fatigue test for such vehicles and for the high load tests for trailers.

Draft agenda for the sixth session of the informal group on Automated Connections between Vehicles.

The use of test reports in Regulation No.13 was first introduced in Annex 11 of UN R13 in 1984. CLEPA proposes this amendment to support the proposal to permit the use of an Annex 19 test report as an alternative method in meeting the vehicle stability function requirements as detailed in Annex 21.

This document addresses the ramifications of introducing the proposals outlined in GRRF-72-07 (superceded by GRRF-72-07/Rev.1) specifically associated with semi-trailers.

OICA proposes alternate language for amendments to the text of Annex 21 governing the use of simulation tools for evaluating electronic vehicle stability control systems (EVSC).

Denmark submitted GRRF-71-19 (subsequently in GRRF/2012/12) proposing a new paragraph to require a test point between the coupling head and the trailer relay emergency valve. This document argues that the requirement is already implicit within UN R13 and therefore, that the change is unnecessary.

Denmark submitted Document GRRF-71-18 (subsequently integrated into GRRF/2012/12) proposing to narrow the limits for coupling force control systems which are allowed to override the compatibility bands. This document argues against the proposed changes.