Report of the Working Party on Brakes and Running Gear on its seventy-fourth session (19–22 February 2013)

This document proposes corrections only to the Russian-language version of the regulation.

The proposal would delete redundant words to improve brevity and clarity.

Amendments to the proposal to amend the snow test method for C3 tyres in order to prescribe the wider of the possible speed ranges. Corrects wording to replace “blocking differential” with “differential lock” and mandatory use of differential lock in certain cases.

Correction to the schedule envisioned for work on the proposed new regulation for lane-keeping assist systems (LKAS) and parking assist systems (PAS).

Revised text prepared by the AMEVSC informal group to clarify the requirements in Annex 21 of UN Regulation No. 13 on the use of simulation, specifically in the Appendices 1, 2 and 3 of Annex 21 following discussions at the last GRRF session and comments from OICA (doc. AMEVSC-10-05).

Editorial corrections to the proposal prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.

Proposal concerning the final report following upon the draft prepared by France on the development of a global technical regulation concerning uniform provisions for pneumatic radial tyres for passenger and light truck (commercial) vehicles.

Text prepared by the International Organization of Motor Vehicle Manufacturers (OICA) in order to introduce the concept of “revision of approvals” into regulations under GRRF responsibility.

The UN R13 and 13-H include procedures to filter out the effects of electric regenerative braking systems from the braking assessment. This proposal would allow test services to disconnect to RBS prior to running tests. It also would allow the use of DC Ampere-hour meter to measure charge states.

OICA comments on document WP.29-157-06 for GRRF consideration.

Several vehicle control regulations refer to compliance with UN Regulation No. 10 on electromagnetic compatibility. The proposal would revise these references to focus only on the technical (thus excluding administrative) requirements since some countries do not apply UN R10.

Proposal that would correct and clarify provisions within Annex 10 that apply not only to category O2 and O3 trailers, but also, as intended, to category O4 trailers.

Text prepared by Italy to insert into Revision 2 the missing item 12.5 of the transitional provisions already approved as per Corrigendum 01 to
Supplement 7.

Text prepared by the International Organization of Motor Vehicle Manufacturers (OICA) in order to remove the ESC control and tell-tale requirements from Regulations Nos. 13 and 13-H to Regulation No. 121 and to review the transitional provisions of both Regulations 13 and 13-H.

The AEBS regulation provides for acoustic, haptic, and/or optical warnings in relation to the nature and timing of an impending collision. This proposal seeks to clarify the choices available to manufacturers according to the various conditions/scenarios envisioned by the regulation.

This paper presents some of the main questions and positions of OICA regarding the Japanese proposal on lane-keeping and parking-assist systems. In general, OICA is not in favor of new regulations for LKAS and PAS.

Paper prepared by OICA contesting the proposal from FEMFM to apply the “identical disc/drum” philosophy to the definition of identical brake linings.

Amendment prepared by the informal working group on Automated Connections between Vehicles (ACV) to enable the use of automatic coupling systems under UN Regulation No. 13.

Insertion of missing items to define terms ACV plug and ACV socket.

Draft terms of reference and rules of procedure for the informal working group established to overhaul the UN Regulation on mechanical couplings presented by the informal group chairman for GRRF approval.

Annex to the draft terms of reference providing a list of possible areas for amendments to the regulation on mechanical couplings.

Text prepared by the UN R55 informal group: Requirements on movable ball couplings, increased range of application of remote controls to couplings similar to C50-X and G50-X; couplings amendments; enable increased standard coupling characteristic values; and additional requirements for mountings.

Introduction to a new EC-sponsored research project into the impact of tire-pressure monitoring systems in reducing fuel consumption and CO2 emissions of commercial vehicles.

Draft questionnaire destined for TPMS manufacturers and developed for the study of TPMS in the reduction of commercial vehicle fuel consumption and CO2 emissions.

Questionnaire destined for tire manufacturers and developed for the study of TPMS in the reduction of commercial vehicle fuel consumption and CO2 emissions.

Questionnaire destined for vehicle manufacturers and developed for the study of TPMS in the reduction of commercial vehicle fuel consumption and CO2 emissions.

Recommendations from Mr. C. Ross transmitted to the secretariat concerning editorial improvements and corrections to the text of UN Regulation No. 13.

Response to proposals offered by OICA in document GRRF-74-16.

Proposed clarifications to the text prepared by the European Association of Automotive Suppliers (CLEPA) and from the International Organization of Motor Vehicle Manufacturers (OICA) to concerning references to Regulation No. 10 within Regulation Nos. 13 and 13-H.

Comments from India on informal documents GRRF–73-11 and GRRF-73-10 proposing to clarify and align the texts of GTR No. 3 and UN Regulation No. 78 on motorcycle braking systems.

Proposal by IMMA to clarify the text of UN R78 and align the text with Global Technical Regulation No. 3.

Proposal prepared by the IMMA to clarify the GTR text and introduce simplified test procedures in accordance with UN Regulation No. 78.

Current wording of UN R79 prevents the approval of positive steering of trailers using energy supply and electrical control from the towing vehicle because standards applicable to energy supply connectors and digital information interchange have not been established.

Updated version of the proposed global technical regulation on light vehicle pneumatic radial tires.

Text prepared by the Netherlands to suggest improvements and simplifications of the transitional provisions in UN Regulations 13 and 13H.

Submission from Japan further elaborating on the scope of its proposal for a new regulation for the approval of lane-keeping assist steering systems.

Presentation providing accident data to support the Japanese proposal for a new regulation to govern approvals of lane-keep assist steering systems (LKAS).

Relation between L&R slip ratio difference and ACC without TCS and Differential Lock and Comparison between Traction Control System “ON” and “OFF”.

Presentation from the “ambassador” of the Informal Group for the establishment of an International Whole Vehicle Type Approval (IWVTA) system concerning activities and information relevant to the GRRF.

Supporting presentation to the ETRTO proposal for minimum wet-grip performance thresholds (document GRRF-73-18) to ensure that improvements in tire rolling resistance (per EU CO2 goals) do not result in inadequate wet-grip performance.